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Description of GB 215320 (A) 

Gelatine.

We, GEORGE NELSON, DALE & COMPANY Improvements in the Method of Manufacturing Thin Sheets of LIMITED, of Emscote Works, Warwick, Warwickshire, England, a company organised and existing under ,Tie laws of Great Britain and Ireland, Assignees of ROBERT ATKINSON MCQUITTY, of 24, Holborn, London, E.C. 1, a subject of the King of Great Britain and Ireland, do hereby declare the nature of this invention and in what manner the same is to be performed, to be particularly described and ascertained in and by the following statement:--The present invention relates to improvements in the method of manufacturing thin sheets of gelatine described in our prior Patent No. 15,465/14.In that specification, a method is described in which the gelatine is coated in a thin film on the surface of the flexible web which is then wound up over the curved surface of a wheel and dried under tension, when the gelatine is easily stripped off without the necessity of mechanical stripping means and either rolled up or cut to sheets of the desired dimensions. In our prior Patent No. 138,194 apparatus is described comprising a tank provided with a projecting lip adapted to engage the surface of the flexible foundation to be coated during its vertical passage up past the tank and a float for raising the level of the liquid in the tank to a position above the projecting lip. Broadly stated the invention comprises the use of a web or flexible foundation in endless form which passes vertically up from the coating apparatus, over a horizontally arranged surface, and then in slack form back to the coating apparatus. Tension is maintained in the vertical and horizontal positions of the web by the weight of a roller which is carried in guide slots below the coating apparatus, Above the flat or curved horizontal run of web which is under tension, a roof and side walls are provided and air blown in or extracted by a suitable fan, pump or the like, so that the gelatine is quickly dried when it is taken off and rolled up or cut into sheets. According to the further object of the invention, the coating apparatus is provided with a rotating roller dipping into the liquid gelatine, so that it maintains a pool of the liquid between itself and the web and the web is coated without touching anything solid, whereby scratches and damage to the coating surface of the web and foundation are avoided. The invention is illustrated in the accompanying diagrammatic drawings, in which Figure 1 shows the general arrangement of the apparatus for carrying out the invention. Figure 2 shows a section through the improved coating apparatus. In Figure 1, 1 is the flexible foundation, passing over the roller 2a, power driven roller 2 and the curved surface 3. 4 is the coating apparatus, 5 the tension roller working in slots 6 and 7 the vertical run of the foundation. 8 is the roof and 9 the air rump supplying hot air to the gelatine surface running over 3. The ends of the web or flexible foundation are joined together with a stiffening rod at each end, connected with a flexible binder, such as tape, cord etc, so as to allow of continuous motion over a flat or curved surface, and then in slack and curved form back to the starting point. This journey is repeated as often as necessary to complete the drying of the gelatine on the flexible band. On repeat journeys, the gelatine supply in the tank is cut off unless it is desired to add a second coat of gelatine. In the apparatus shown in Figure 1, the level of the gelatine in the tank is adjusted by means of the float 13. When the float' is held down in the tank the level of the liquid gelatine rises above the front board of the tank, and the foundation 1 is coated during its passage past the front board. In Figure 2, 10 is a gelatine tank, 11 the rotating roller and 12 the pool of gelatine maintained by the rotation of the roller in the direction of the arrow, between itself and the foundation 1.The use of a rotating feed roller makes it possible to coat the foundation with very liquid gelatine and to repeat the coating of gelatine thereon a sufficient number of times to obtain a coating of the desired thickness. The advantage obtained from using gelatine in a very liquid form lies in the fact that the more gelatine is heated to evaporate the moisture contained therein in order to thicken its consistency, the more the colour and strength of the gelatine deteriorates, and consequently edible sheets manufactured from thin or very liquid gelatine have a very much better appearance and are of a higher quality than those sheets manufactured from gelatine of a thicker consistency, the thicker consistency having been obtained by the evaporation of the water contained in the gelatine at a fairly high temperature. Having now particularly described and ascertained the nature of our said invention and in what manner the same is to be performed, we declare that what we Nelson, Dale, & Co., Ltd., G., (Assignees of McQuitty, R. A.). May 3,1923, [Convention date]. Coating materials in long lengths.-Apparatus for the manufacture of thin sheets of gelatine comprises an endless web 1 of flexible material which is arranged to travel vertically from the coating apparatus 4, and then horizontally over a surface, flat or as shown curved, at which point a draught of air is created, as by a pump 9 and hood 8, in order to dry the coating. By driving the roller 2 and mounting the roller 5 in slots, the horizontal and vertical runs of the foundation are maintained under tension. In the coating apparatus shown in Fig. 1 the level of the liquid is adjusted by a float 13.; An alternative coating apparatus is shown in Fig. 2, in which the liquid gelatine gathered up by a rotating roller 11 forms a pool 12 against the foundation, and in this instance, contact of the latter with a solid surface is obviated. Specifications 15465/14, and 138,194, [Class 2 (ii), Cellulose &c.], are referred to.

   

Publication number: GB215320 (A) Publication date: 1924-09-11 Inventor(s): Applicant(s): GEORGE NELSON DALE & COMPANY LTD

Classification: - international: B29C41/28; B29C41/00 - European: B29C41/28

Application number: GB19240004183 19240218  Priority number(s): SEX215320 19230503

Abstract of GB 215320 (A)

Publication number: GB221427 (A) Publication date: 1924-09-11 Inventor(s): Applicant(s): GEORGE NELSON DALE & COMPANY L

Classification: - international: F26B15/14; F26B15/00 - European: F26B15/14 Application number: GB19240004182 19240218  Priority number(s): USX221427 19230914

 

 

Abstract of GB 221427 (A)

221,427. Nelson, Dale. & Co., Ltd., G., (Assignees of Beveridge, W. K.). Sept. 14, 1923, [Convention date]. Racks, moving.-Gelatine sheets which are enclosed in crinkling frames and dipped in water, as described in Specification 145,486, [Class 2 (ii). Cellulose &c.], are passed through a tunnel to dry them more rapidly. The frames 13 are supported by moving bands 3, and air, which may be heated in a heater 8, is supplied by a blower 9 and a distributor 10 to the top of a tunnel 1. Baffles 12 direct the air through slots 11 into the tunnel.

 

Improvements in Crinkling Machines for Edible Gelatine.

We, GEORGE NELSON, DALE & COMPANY LIMITED, of Emscote Works, Warwick, Warwickshire, England, a company organised and existing under the laws of Great Britain and Ireland, Assignees of House, Coten End, Warwick, England, a subject of the King of Great Britain and Ireland, do hereby declare the nature of this invention and in what manner the same is to be performed, to be particularly described and ascertained in and by the following statement:- The present invention relates to apparatus for manufacturing crinkled sheets of edible gelatine, produced by the process described in general in our Patent No. 145,486.In that process, dry gelatine sheets are enclosed in a crinkling frame dipped in water and left to dry either in the atmosphere or under the action of a blower. The present invention provides apparatus for rapidly drying the sheets, and a construction embodying the invention is shown in the accompanying drawings, in which Figure 1 is a longitudinal section of the apparatus. Figure 2 is a plan view of Figure 1, and Figure 3 is a transverse section of the apparatus . The apparatus comprises a tunnel 1 carried in a suitable frame 2. A pair of endless belts 3 are respectively arranged on each side of the interior of the tunnel, these belts passing over pulleys 4 and 5 mounted at each end of the tunnel. The pulleys 4 are driven from any suitable power source through a gear 6 at a fairly low speed. The crinkling frames 13 are of similar form to those described in Patent No. 145,486, having end extensions 7, which rest on the belts 3, so that the frames pass in a vertical position through the tunnel 1. Hot air is supplied to the interior of the tunnel in the following manner. Air is drawn through a heater, diagrammatically shown at 8, by a fan 9 and is supplied to a distributor 10 on top of the tunnel 1. Slots 11 are provided for the air to reach the interior of the tunnel and behind each slot is a baffle 12 which catches the air and ensures delivery through the slot. In use, the crinkling frames 13 are respectively Riled with a sheet of gelatine and dipped and then placed in position one after another, on the belts 3 so that they pass through the tunnel, the hot air delivered through the slots 11 drying the gelatine. The frames finally emerge at the end of the tunnel 1 and are removed. The speed of the belts, the delivery of air, and length of the tunnel, are determined so that the sheets are just dry when the frames emerge. Having now particularly described and ascertained the nature of our said invention and in what manner the same is to be performed, we declare that what we

Claims of GB 215320 (A)

     

 

claim is:- 1. Apparatus for manufacturing thin sheets of gelatine, of the character in which the liquid gelatine is coated on a web, dried under tension over a surface and stripped when dry. comprising an endless web adapted to rise vertically from the coating apparatus and then to pass horizontally over a supporting surface where the gelatine is dried under an air draught. 2. Apparatus for manufacturing thin sheets of gelatine according to Claim 1, in which the tension in both the vertical and horizontal positions of the web is maintained by a roller working in vertical slots. 3. In apparatus for manufacturing: thin sheets of gelatine according to Claim 1, the provision of roller in the coating apparatus which maintains a pool of liquid gelatine in contact with the web so that the coating is done without the ( coating on the web touching anything solid. 4. The apparatus for manufacturing thin sheets of gelatine, substantially as described with reference to the accompanying drawings.

Publication number: GB625200 (A) Publication date: 1949-06-23 Inventor(s): Applicant(s): GEORGE NELSON DALE & COMPANY L; RICHARD NORTON COLEMAN

Classification: - international: C09H3/02; C09H3/00 - European: C09H3/02 Application number: GB19470009817 19470412 

Priority number(s): GB19470009817 19470412

 

Abstract of GB 625200 (A)

Activated alumina is used as a filtering-medium for use in the extraction of arsenic from gelatine. The alumina is carried in a cylindrical stainless steel container and is arranged in a series of layers of progressively decreasing size, the coarsest being at the bottom. ALSO: Arsenic is removed from gelatine by subjecting a solution to treatment with activated alumina. Suspended matter is preferably first removed by filtration and the solution is then sprayed over a bed of alumina consisting of a series of layers of progressively decreasing size, the coarsest being at the bottom. The bed of alumina is carried in a cylindrical stainless steel container having at its lower part perforated pipes for withdrawing the effluent.

Description of GB 625200 (A) PATENT SPECIFICATIS RV Application Date: April 12, 1947.

Complete Specification Left: Aug 21, 1947. Complete Specification Accepted: June 23,

Index at acceptance:-Class 40 (viii>, U( 4 b:10 b 3), LT 12 (al:b 2).

PROVISIONAL SPECIFICATION.

Improvements relating to the Extraction of Arsenic from Gelatine.

We, GEORGE NELSON DALE & COMPANY LIMITED, a British Company, of Emscote Mills, Wharf Street, Warwick, and RICHARD NORTON COLEMAN, a British Subject, of the 4 Company's address, do hereby declare the nature of this invention to be as follows: This invention has for its object to provide an improved process and means for the extraction of arsenic from gelatine.

The invention comprises a process wherein the arsenic is separated from a gelatine solution by finely divided adsorbent alumina.

The invention also comprises an apparatus having in combination a container, a mass of adsorbent alumina within the container, and means in the lower part of the container for withdrawing the effluent solution.

In one manner of carrying the invention into effect we employ finely divided alumina in the condition ordinarily known as activated alumina By activated alumina is meant a practically pure aluminium oxide having associated therewith a small amount of water, and is usually obtained from hydrate of alumina By bringing this and an aqueous solution of gelatine into intimate contact the arsenic, which is unavoidably present in the gelatine as an impurity, is adsorbed by the alumina The extent to which the arsenic can be removed is such as will render the gelatine harmless when used in an ingredient in food preparations.

The treatment of the gelatine solution by activated alumina can be carried out in a variety of ways Preferably we employ a container having in its lower part a system of perforated pipes by which the effluent can be withdrawn Around and over these pipes is packed a layer of divided and relatively coarse alumina (for example 41/8 mesh) On this layer is placed a layer of, say, 8/16 mesh alumina, and above the latter is placed a layer of, say, 16/32 mesh alumina Finally a top layer of, say, 32/100 mesh alumina is applied 45 The liquid to be treated consists of a hot aqueous solution of gelatine, from which, preferably, dispersed suspended matter has previously been removed by ordinary filtration.

This is sprayed over the top layer through 50 a perforated pipe The liquor passes through the bed and builds up above the upper surface of the alumina a head of 1-2 feet The purified liquid flows out through the pipes in the lower part of the container as a clear 55 and colourless liquid.

In one apparatus made in accordance with the invention, we employ a cylindrical stainless steel container of about four feet diameter and about four feet high, and in this 60 is placed around the lower pipes a bottom layer consisting of about one cwt of the first grade of alumina above mentioned The next layer consists of about one cwt of the second grade, and the third layer consists of about 65 two cwt of the third grade The top layer consists of a relatively small quantity of the smallest grade above mentioned.

By means of this apparatus we can obtain a 76 %o extraction of the arsenic content of 70 the gelatine Whereas the average initial arsenic content in a number of samples treated was 3 42 parts per million, the content after treatment was 0 86 p p m, an amount which is substantially less than is 75 ordinarily regarded as permissible in gelatine required for use in food substances.

After the alumina has been used for a time it can readily be restored to its initial condition, with but little loss of the material, by 80 filling the apparatus with water and sterilising by steam, the material being cleansed by causing water to flow in the reverse direction (back-flushing) through the mass.

Dated this 10th day of April, 1947.

MARKS & CLERK. of London, Birmingham, Manchester, and Glasgow.

COMPLETE SPECIFICATION. Improvements relating-to the Extraction of Arsenic from Gelatine.

81 We, GEORGE NELSON DALE & COMPANY NORTON COLEMAN, a British Subject, of the LIMITED, a British Company, of Emscote Company's address, do hereby declare the Mills, Wharf Street, Warwick, and RICHARD nature of this invention and in what manner 90 C X t 625,200 No 9817147 1949.

the same is to be performed, to be particularly described and ascertained in and by the following statement:-

This invention has for its object to provide an improved process and means for the extraction of arsenic from gelatine.

The invention comprises a process wherein arsenic is separated from a gelatine solution by finely divided adsorbent alumina.

The invention also comprises an apparatus having in combination a container, a mass of adsorbent alumina within the container, and means in the lower part of the container for withdrawing the effluent solution.

In one manner of carrying the invention into effect we employ finely divided alumina in the condition ordinarily known as activated alumina By activated alumina is meant a practically pure aluminium oxide having associated therewith a small amount of water.

It is usually obtained from hydrate of alumina By bringing the activated alumina and an aqueous solution of gelatine into intimate contact, the arsenic, which is unavoidably present in the gelatine as an impurity, is adsorbed by the alumina The extent to which the arsenic can be removed is such as will render the gelatine harmless when used in an ingredient in food preparations.

The treatment of the gelatine solution by activated alumina can be carried out in a variety of ways Preferably we employ a container having in its lower part a system of perforated pipes by which the effluent can be withdrawn Around and over these pipes is packed a layer of relatively coarse alumina (for example 4/8 mesh) On this layer is placed a Layer of, say, 8/16 mesh alumina, and above the latter is placed a layer of, say, 16/32 mesh alumina Finally, a top layer of, say, 32/100 mesh alumina is applied.

By the term 4/8 mesh we mean a mesh capable of passing particles varying from 1 " -" in size A corresponding meaning applies to the other mesh sizes specified.

The liquid to be treated consists of a hot aqueous solution of gelatine, from which, preferably, dispersed suspended matter has previously been removed by ordinary filtration.

This is sprayed over the top layer through a perforated pipe The liquor passes through the bed and builds up above the upper surface of the alumina a head of 1-2 feet The purified liquid flows out through the pipes in the lower part of the container as a clear liquid.

In one apparatus made in accordance with the invention, we employ a cylindrical stainless steel container of about four feet diameter and about four feet high, and in this is placed around the lower pipes a bottom layer consisting of about one cwt of the first grade of alumina above mentioned. The next layer consists of about one cwt of the second grade, and the third layer consists of about two cwt.

of the third grade The top layer consists 65 of a relatively small quantity of the smallest grade, above mentioned.

By means of this apparatus we can obtain -a 75 % extraction of the arsenic content of the gelatine Whereas the average initial 70 arsenic content in a number of batches treated was 3 4 parts per million' the content after treatment was 0 9 p pm m, an amount which is substantially less than is ordinarily regarded as permissible in gelatine required for use in 75 food substances.

After the alumina has been used for treating a batch of gelatine, the apparatus is filled with water and sterilised with steam, the material being finally cleansed by causing 80 water to flow in the reverse direction ("back flushing") through the mass The adsorbent mass is now ready to treat a further batch of gelatine as and when required In this way the apparatus may be used repeatedly on a 85 large number of batches of gelatine, and it is only necessary to make good small mechanical losses by the occasional addition of a few pounds of fresh alumina The arsenic from the gelatine gradually accumulates in the mass 90 which should be completely renewed after several months use.

Having now particularly described and ascertained the nature of our said invention and in what manner the same is to be per 95

Claims of GB 625200 (A)

formed, we declare that what we claim is:-

1 For the extraction of arsenic from gelatine, a process comprising the subjection of gelatine solution to the action of finely divided adsorbent alumina 100 2 A process as and for the purpose claimed in Claim 1, wherein is used a hot aqueous solution of gelatine_ from which dispersed suspended matter has previously been removed by ordinary filtration 105 3 A process as and for the purpose claimed in Claims 1 or 2, wherein the gelatine solution is sprayed over the upper layer of a bed of alumina, the latter consisting of superimposed layers of alumina of progressively 110 varying fineness, the coarsest material being in the bottom layer.

4 An apparatus for use in effecting the process claimed in any of the preceding claims, and comprising the combination of a 115 container, means in the lower part of the container for withdrawing the effluent-solution, and-a mass of adsorbent alumina with the container.

 

An apparatus as claimed in Claim 4, 120 in which the mass of adsorbent alumina consists of superimposed layers of alumina of progressively varying fineness, the coarsest material lieing in the bottom layer.

Dated this 15th day of August, 1947.

 

EM Nelson

Process of Thawing Frozen Food April14th 1896

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The Nelsons

DVD

A Brief History of The Nelsons Of Warwick

 

 

Rediscovering the Gelatine Factory

Introduction

 

The Gelatine Factory

A comprehensive account 1899

from Round About Warwick

 

George Nelson

 

 

Nelson's Emscote Mills 2009

 

 

T B Dale

 

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Gelatine and its uses

 

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