US1310071A - Machine for shaping and polishing articles of celluloid and the like - Google Patents

Description

W. GURRY. MACHINE FOR SHAPING AND PULISHING ARTICLES 0F CELLULOID AND THE LIKE.

APPLICATION FILED JUNE I2. IQIB.

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UNITED STATES PATENT OFFICE.

WILLIAM GURRY, 0F LEOMINSTEB, MASSACHUSETTS.

MACHINE FOB SHAPING AND POLISHING ARTICLES 0]? CELLULOID AND THE LIKE.

Specification of Letters Patent.

Patented July 15, 1919.

Application filed June 12, 1918. Serial No. 239,633.

To all whom it may concern:

Be it known that 1, WILLIAM GURRY, a citizen of the United States, residing at Leominster, in the county of Worcester and State of Massachusetts, have invented a new and useful Machine for Shaping and Polishing Articles of Celluloid and the like, of which the following is a specification.

This invention relates to the shaping and polishing of celluloid and similar articles in quantities. Its principal object is to provide for reducing the hand work now re quired in this art.

It is customary for celluloid combs and similar articles to be finished by handling each one. An operative takes one or two of these articles and places them against a buffing wheel rotating in a bath containin pumice or ashes. In order to polish an smooth out cutting tool marks between the teeth the combs are held by tongs and sedge grass is employed. These have to be placed very often in practice. On account of handling each article separately and holding it for a considerable period of time while being polished the labor is a material item in the expense of the production of such articles, and is particularly so in times of high wages.

I have found that it is not necessary to use the tongs or grass or to handle the articles in this slow manner, but that a large number of them can be placed rapidly on a support and held in such a way that they can be polished so as to take out the marks of the cuttin tools or the like by which they are made. hey can be pointed also and can be rapidly removed and'replaced.

Reference is to be had to the accompanyin drawings, in which- Figure 1 is a sectional view on the line l1 of Fig. 2 of a machine constructed in accordance with this invention for carrying out the first step of the method;

Fig. 2 is a longitudinal central sectional View thereof;

Fig. 3 is a transverse sectional view similar to Fig. 1 of the apparatus for performin the finishing operation;

Tig. 4 is a plan of the same;

Fig. 5 is an enlarged sectionalview of the holding means on the drum;

Fig. 6 is an elevation of a portion of the same;

Fig. 7 is a similar elevation of a modification showing a comb held thereon, and

Fig. 8 is an edge view thereof.

5 or other means by which it can be driven.

Where it passes through the tank a tight packed joint is made.

On this shaft between the two frames 3 is located a drum made up of a plurality of disks 6, each secured to the shaft. -These disks support a plurality of bars 7 which are.

fixedly secured to the disks. Each of these bars extends throughout the length of the drum and constitutes a support for the articles to be operated upon.

For the purpose of holdin the combs or other articles in position, the ars 7 are provided with two hooks 8 arranged to turn so as to clamp and release the bars 9 on which the combs are located.

The other machine is shown as involving a tank 10 also adapted to hold water in which is placed a quantity of ashes or umice or other polishing material. Two rames 11 constitute the supports for the mechanism. They are provided with bearings and with a main shaft 12 which extends from one frame to the other lengthwise of the tank. This shaft is provided with a pulley 13 or other means by which it can be driven.

On this shaft between the two frames 11 is located a drum made up of a plurality of disks 14, each secured to the shaft. These disks constitute the entire fixed part of the drum. Each of these disks is provided with a plurality of radial sockets 15 for a series .of springs 16. These springs are fixed at the bottom of the sockets and project from the cylindrical surface of the disks. Those on the several disks are in alinement. They support a plurality of bars 17 which are secured to the springs 16 by means of pins 200 which are fixed in positlon. Each of these bars extends throughout the length of the drum and constitutes a support for the articles to be operated upon that is capable of yielding.

For the purpose of holding the combs or other articles in position, the bars 17 are provided with two end hooks 18 arranged to turn so as to clamp and release the bars 9 expeditiously. These bars are alsoiprowided with pins 19 extending into holes in the bars 17 or 7. Thus the bars 9 can be detached from the drum shown in Fig. 1 and applied to that in Fig. 2. The combs are held on the bars 9 by turn hooks 20 and by projections 21 extending out from the bar 9 so as to be located between two of the teeth of the comb or against some surface of it so as accurately to locate them. In this way the combs are held firmly down on the bars 9 but can be released merely by turning the hooks 20.

The frames 11 are also provided with bearings for the ends of a shaft 27. This shaft is provided with a pulley 28 for receiving a belt from a pulley on the other shaft and rotating it and on it is located a butting wheel 29. This wheel is made up of layers of carpeting or similar coarse fabric cut out in circular form and pressed together by a couple of plates 30, one of which is ureter-- ablyfixed to the shaft 27 and the other adiustalo le along it by means of a nut 31. This Ilrum therefore is cylindrical in shape and furnishes a vehicle for holding some ofthe solid material in the liquid. It is so located as will be seen by reference to Fig. 2 that the combs or other articles held on the holding drum will come against it in rotation. It is rotated at a higher speed than the drum 14 and acts as a polishing wheel.

Inthe form shown in Figs. 7 and 8 bars 33 are employed in place of the bars 17 and they are provided with holding members 34' held bythumb screws 35 having their outer ends enlarged so as to secure the combs in position. These bars 35 of course are springsupported like the bars 17.

In the operation of the device the combs are placed on the bars 9 and they are mounted on the drum 6. Then the tank 1 is filled with water containing the ashes or pumice to a level above the top of the drum and the drum is rotated. This polishes the combs or other articles and for some purposes they can be re arded as finished. But when a higher p0 ish is desired the bars 9 are released from this drum and placed, still carrying the combs, on the bars 17 of the other drum. The tank 10 is filled with water to a level a little below the shafts. This Watercontains the same polishing material as the other. Then the two shafts are rotated, the shaft 27 being rotated at a much higher speed than the shaft 12. The result of this action is that in the time that it now takes to polish a single comb or pair of them a verylarge number can be polished on one side to such a degree as to take out all the tool marks and in fact to shape their points in the case of the combs shown. These blanks are cut out in a rather rough manner and this polishing action virtually grinds the points down tdthe desired degree. The

combs can be turned over in their holders and subjected tothe same (action again when the other side will be ground into shape. This gives the combsa polishing action all over and greatly improves their appearance.

Although I have illustrated and described only certain forms of the invention I am aware of the fact that n'iodifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims.

Therefore I do not wish *to be limited to all the details of construction herein shown and described, but what/I do claim is 1. In a machine for shaping articles of celluloid and the like, the combination with a tank for a liquid containing a grinding material, of a drum rotatable'therein partially submerged i-n-the liquid, and yielding supports on the drum for the articles to be operated upon.

In a machine for shaping and polish' ing articles of celluloid, the combination with a tank for water containing a polishing powder, of a drum rotatable therein in the water, supports on the drum yieldingly connected therewith so as to be capable of moving in all directions, and means on said supports for supporting the articles to be polished.

3. In a machine of the character described, the combination with a tank for containin water and a polishing powder, of a sha t in said tank, a series of disks fixed to said shaft and spaced apart thereon, said disks constituting a drum and extending down into the Water, and bars extending longitudinally and supported by said disks for holding the articles to be pelished and moving them in the water to shape and polish them thereby.

4. In a machine of the character described, the combination with a tank for containin water and a polishing powder, of a sha t in said tank, a series cfnisks fixed to said 'shaftandspaced apart thereon, said disks constitutin a drum, each disk having a plurality o sockets in its "surface, springs located in said sockets and projecting therefrom, and bars extending longitudinally of the drum endsa pert-ed by said springs in the disks for hol' ing the articles to be polished.

5, In a machine of the character described, the combination of'a tank for water and polishing material, of a drumrotabahle therein, a shaft forsuppomimg sald drtun located above the'level of the liquid in the tank, a series of bars surrounding said'drhm and located longitudinally, yielding-means for supportin said bars from the drum, means on sai bars for holdin down on the surface thereof combsor ot er articles to be polished, and holding means located perpendicular to the surface ofsaid' bars for engaging the articles at another point, the first named means being adapted to be turned on its axis out of operative position, whereby the articles can be instantly placed in position or removed.

6. In a machine for shaping articles of celluloid and the like, the combination with a tank for a liquid containing a grinding material, of a drum therein, yielding su ports on the drum for the articles to lie operated upon, and a polishing Wheel located in said tank in position to engage the articles on said drum, said drum and wheel both extending below the surface of the water.

7. In a machine for shaping and polishing articles of celluloid, the combination with a tank for water containing a polishing powder, a drum rotatable therein partly submerged in the water, means on said drum for yieldingly supporting the articles to be polished in a substantially tangential position, and a polishing Wheel located in said tank and rotatable at high speed.

8. In a machine of the character described, the combination of a tank for water and polishing material, of a drum rotatable therein, a shaft for supporting said drum located below the level of the liquid in the tank, a series of bars surrounding said drum and located longitudinally, yielding means for supporting said bars from the drum,

Gopies of this patent may be obtained for five cents each, by addressing the means on said bars for holding down on the surface thereof combs or other articles to be polished, and a polishing wheel located in said tank in position to engage the articles held by the drum.

9. In a machine of the character described, the combination with a tank containing water and a polishing powder, of a shaft in said tank, a series of disks fixed to said shaft and spaced apart thereon, said disks constituting a drum, bars extending longitudinally of the drum yieldingly supported by said disks for holding the articles to be polished, and a polishing wheel located in said tank in position to engage the articles held by the drum.

10. In a machine of the character described, the combination with a tank containing water and a polishing powder, of a shaft in said tank, a series of disks fixed to said shaft and spaced apart thereon, said disks constitutin a drum, bars extending longitudinally of the drum supported by said disks for holding the articles to be polished, a second set of bars detachably mounted on the first named bars, and readily detachable means for holding articles to be finished on the second set of bars.

In testimony whereof I have hereunto affixed my signature.

WILLIAM GURR Y.

Commissioner of Patents,

Washington, D. 0."

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