US1083353A

US1083353A - Production of perforated strips.

Info

Publication number: US1083353A
Application number: US56984810A
Authority: US
Inventors: Thomas A Edison
Original assignee: EDISON STORAGE BATTERY CO
Current assignee: EDISON STORAGE BATTERY CO
Priority date: 1910-07-01
Filing date: 1910-07-01
Publication date: 1914-01-06
Anticipated expiration: 1931-01-06

Description

T A. EDISON.

PRODUCTION OF PEBPOBATED STRIPS.

Arrmommx rum) JULY 1, 1910.

Patented Jan. 6, 1914.

8 SHEETS-SHEET 1.

T. A. EDISON.

PRODUCTION OF PBRPORATBD STRIPS.

APPLICATION FILED JULY 1, 1910.

1,083,353. Patented Jan. 6,1914.

2 sums-sum 2.

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THOMAS A. EDIsoN; 0 LLE'WE'LIJYN PARK, WEST ORANGE, NEW JERSEY, ASSIGNOR 'ro EDISON STORAGE-BATTERY COMPANY, or WEST ORANGE, NEW JERSEY, A con- PORATION or NEW JERSEY".

PRODUCTION or PEEEORATEE STRIPS.

Application-filedluly'l, 1910; Serial No. 569,848.

pockets to contain theactive" material instorage batteries. Patent No. 870,024 was granted to me November 5, 1907 upon an apparatus for The strips pro need by this'inven'tion were perforated by a pair ofcgfiiperating perforating rolls between which the strip was passed. I have found that objectionable burs are formed around each of the minute perforations produced by this operation, which burs somewhat obstr-uet the openings of the perforations, and also make the surface of the strip which forms the inner surface of the finished pocket in the storagebattery too rough. Accordingly, I now propose to grind down these burs to open the perforations sufiiciently and also to reduce the roughness of the surface of the strips.

Accordingly, the objects of my invention are to produce an improved process for making perforated strips, includin as astep the grinding off of the ends of t e burs produced as above described, and also the provision of an improved apparatus by which the process step above referred to may be efficiently carried out.

Reference is hereby made to the accompanying drawings forming part of this specification, wherein the same numerals are used to designate corresponding parts in the several views, and in which Figure 1 represents in side elevation, mechanism for continuously grinding ofi the burs from the surface of the perforated strip, by which mechanism thegrinding step of my improved process may be carried out. Fig. 2 represents a cross section on line 22 in Fig. 1, parts being shown in elevation. Figs. 3 and 4 represent enlarged sections through the perforated strip before and after grinding respectively, and Fig. 5 is a perspective side elevation of the perforated and ground strip.

Specification of Letters Patent.

roducing perforated strips' Patented Jan. 6, 1914.

Referring now to the'drawings, the strip 1 is fed from-the supply reel 2 past the emery Wheel or similar grinding device 3 andronto take-up reel 4, the strip passing overidler- 5 which is mounted in proximity togrinding-wheel 3. Idler 5 is mounted in.

aframe 6-whichis preferably in the form oi a" hopper and which is adapted to be moved towardandaway from emery wheel 3 in order to adjust the position of perforated strip 1 with respect to the grinder to regulate-the amount .of material taken off from the'strip by the grinder, The hopper-like form of the frame 6 serves to confine and collect the abraded mate-rial- Frame 6 is fed toward and away from the grinder by means of the device shown diagrammatically at'7, which may comprise a screw and nut or equivalent deviceoperated by handle 6. The'strip is fed by means of toothed roller 9, the strip passingbetween the same and asmooth-roller 10. Roller 9 is mounted in bracket 11 carried by the frame 12 of the machine. Roller 10 is-carried by bracket 13 pivotally mounted at 14 upon frame 12, screw 15 extending through bracket 13 and bearing upon frame 12, being adapted-by its movement to cause bracket 13 to rock about pivot 14. to adjust the position of roller 10 with respect to roller 9; Grinder 3 is driven by belt or chain connection 16 and the shaft of roller 9 by chain 17 takeup reel 4 being rotated from the shaft of purpose is illustrated in Fig. 2. As here shown, the chain 18 passes over the sprocket 19 which is mounted upon a friction member 20, which revolves upon shaft 21 upon which reel 4 is secured. Friction member 20 is forced into frictional contact with cooperating friction device 22 secured upon shaft 21 by means of Spring 23. Accordingly, shaft 21 and reel 4 are'driven frictionallyby the devices described from chain 18 so that as the, diameter of the roll of film upon reel 4 increases and the peripheral speed thereof increases over that of feeding roller 9, fricconsiderably widened thereby, as'shown in Fig. 4. The appearance of the finished strip is indicated by Having now I claim is 1. In apparatus of the character described, in combination, a grinder, and means for continuously feeding a strip having ends and of perforated material ast said grinder Fig. 5. described my invention, what a to reduce-the burs surroun ing the perforations on one side of the strip, substantially as described.

2. In apparatus of the character described, in combination, a grinder, a supply reel, a take-up reel, means for uniformly progressing a strip of perforated material from said supply reel past said grinder and, onto said ta e-up reel, and means for adjusting the position of the portion of said strip passin said grinder with respect to said grinder, su stantially as described.

3. In apparatus of the character described, in combination, a grinder, and means for continuously feeding a strip of perforated noeeteee material past said grinder to reduce the burs surrounding the perforations on one side of the strip and including a hopper adjustable relatively to the grinder, said hopper having means mounted therein for pressing the strip against thegrinder, substantially as described.

4. In apparatus of the character described, in combination, a grinder, and means for continuously feeding a strip having ends and of perfor'atedmaterial ast sa d grinder to reduce the burs surroun ing the perforations on one side of the strip and including an adjustable roller for pressin the strip against the grinder, substantia 1y as described. I

5. In apparatus of the character described, in combination, a grinder, means for continuously feeding a strip of perforated material past said grinder to reduce the burs surrounding the perforations on one side of the stri and including a take-u reel, and means or driving the said feeding means, the said take-up reel having a frictional connection with said driving 'means, substantially as described.

,. This specification signed "and witnessed '80 this 30th day of June 1910.

THOS. A. EDISON.

Witnesses:

DYER SMITH, FRANK 1D. Lawns.