US1734738A

US1734738A - merrick

Info

Publication number: US1734738A
Authority: US
Publication date: 1929-11-05
Anticipated expiration: 1946-11-05

Description

1929. F. w. MERRICK 1,734,733

LACING AND LIKE ARTICLES AND METHOD OF MAKING THE SAME Original Fil ed Sept. 22, 1928 0 agdw a .9

132 12822302 was? wMerzeacm Patented Nov. 5, 1929 UNITED STATES PATENT OFF1E FRANK W. MERRIOK, OF DORCI-IESTER, MASSACHUSETTS, ASSIGNOR TO AMERICAN STAY COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS LAOING AND LIKE ARTICLE AND METHOD OF MAKING THE SAME Original application filed September 22, 1928, Serial No. 307,758.

Divided and this application filed March 7, 1929. Serial No. 245,100.

My invention relates to working leather, felt, and similar materials, and to apparatus for and methods of producing articles from such materials.

This application is a division of my prior application Serial No. 307 ,7 58, filed Sept. 22, 1928.

The invention will be best understood from the following description of one manner of performing the improved method and of examples of articles produced by said method and of apparatus for performing the method, while the scope of the invention will be more particularly pointed out in the appended claims.

In the drawings Fig. 1 is an elevation, with parts in section, of a machine for beveling the edges of strip sheet material;

Figs. 2 and 3 respectively are sections on an enlarged scale on the lines 2-2 and 33 of Fig. 1;

Fig. 4 is an elevation of presser roll mechanism particularly adapted for use in forming leather lacing;

' Figs. 5, 6 and 7 are crosssections on an enlarged scale of a leather strip illustrating different stages in the process of forming leather lacing; and

Fig. 8 is a side elevation of a leather strip illustrating the manner of uniting separate short strips out from the hide.

Referring particularly to Figs. 1, 2 and 3 of the drawings I have shown a rotary disk skiving-knife 1, below the cutting edge of which is mounted a disk 3, the latter being rotatable about an axis 5 which lies in a horizontal plane parallel to the plane containing the cutting edge of the knife said cutting edge preferably extending slightly beyond avertical plane including said axis. As shown the rotary member 3 is provided with a circumferential groove 7 provided with inclined side walls 9, while cooperating with said groove is a stationarv resilient presser member 11 having a foot 13 adapted to engage with a strip of material 15 and force the body portion of said strip into said groove.

As illustrated, the strip of material 15 is fed from a spool 17 through a perforation 19 in a stationary guide plate 21, to which plate the base 23 of the presser member is attached, the end of the plate adjacent the rotary member 3 being slotted as indicated at 25 (Fig. 2) for receiving the foot 13 of the presser.

Any suitable means may be provided for rotating the member 3, the groove 7 of which member is preferably knurled or roughened to cause it to feed the strip through the perforation 19 and against the knife 1. As shown, the parts are so proportioned and disposed relative to the dimensions of the strip 15 that the lateral edge portions of the strip 15 will extend above the circumferential. surface of the member 3, so that the skiving-knife, which lies in a plane substantially tangent to the surface of the member 3, will sever said edge portions from the body portion, resulting in the opposite edge portions of a strip having a cross-section such as shown in Fig. 5 being beveled by the knife to produce the strip having the cross-section shown by Fig. 6.

The apparatus above described is adapted for use with various materials such as leather and felt, felt strips, having a cross-section similar to that shown in Fig. 6, being particularly adaptable for use in fabricating weather strips.

Heretofore in the manufacture of leather lacing, such as is employed for ornamenting and uniting the edges of leather articles such as pocketbooks and the like, the lacing has been madeby drawing strips of leather under a gouge-shaped knife to remove narrow strips having a cross-section similar to that shown by Fig. 7. This prior method, besides being wasteful of leather, has the result that only the flattened side of the lacing can consist of the finished grain side of the hide, whereas in the finished pocketbook, or the like, the curved side of the lacing is exposed, the flat side being placed against the sheets of which the article is formed. Further, lacing made by the prior method is deficient in respect to tensile strength, because the leather adjacent the grain side of the hide is relatively weak compared to the flesh side of the hide, particularly in goat skin, which leather is commonly employed for this pur pose. Further, due to the small. size of the lacing (say about of an inch wide by .025 of an inch thick) it is impossible to unite the ends of leather strips made according to the prior method, resulting in the product consisting of short lengths of lacing commensu rate with the dimensions of the hide.

According; to the improved method ofmaltlacing the curved side of the lacing, as viewed in 7, may be the grain side of the hide, while more of the flesh side may be retained, and lengths of lacing may be formed of any desired length, enabling; the same to be wound on spools for convenience in shipping and handling. Further, according to the improved method the lacing may be made with a minimum waste of leather.

As an example of the improved method, but without limitation thereto, goat hide of about .03 of an inch thick may be split into strips about 1% .i'ches wide. which strips, indicated at 27 in g 8. may have their ends skived to produce wide bevel surfaces, as indicated at 29 in Fig. 8, after which ends of a series of strips may be united with rubher cement to produce a strip of any desired length. Strips of great length thus formed may then be skivcd from the flesh side to make each of uniform thickness, say about .025 of an. inch, after which the strips may be split into a plurality of narrow strips, say about of an inch wide, as indicated in cross-section on an enlarged scale in Fig. 5. in which indicates the grain side of the leather and f the flesh side of the leather. These narrow strips so formed may then be fed to the apparatus. indicated in Figs. 1, 2 and 3, with the flesh sides of the stri s uppermost, resulting in opposite edges of the flesh sides of the strips being skived to produce strips having: cross-sections like that shown by Fin. 6. The beveled strips may then be fed between presser rolls, such as indicated in Fig. 4, in which 31 reprean upper presser roll and a lower presser roll. Herein the upper presser roll has a fiance 35 fitting into a groove 37 in the lower presser roll 33, the bot-tom surface 30 of which ogroove is suitably formed to cause one side of the lacing to be convex, t at. is to sav to curved or polygonal, as desired. The action of the presser rolls in Fig. 4 is slightly to compress the material, thus enabling more of the flesh side of the leather to be employed than in the prior method, and to change its shape from that indicated by Fig. 6 to that indicated by Fig. 7 so that the grain side of the leather will be convex.

It will be understood that the particular cross-sectional shape, dimensions, andmaterials of the articles described above, and the particular apparatus and method described. are given as examples of the invention, and th at wide deviations from these be made without departing from the spirit of the invention.

I claim:

1. As an articleof manufacture, a leather lacing comprising a strip of leather having in cross-section a convex side consisting of the grain side of the hide.

2. As an article of manufacture, a leather lacing comprising a strip of leather having in cross-section a substantially flat side and a convex side, said convex side consisting of the grain side of the hide.

3. As an article of manufacture, leather lacing of length greater than the length of the hide comprising a strip of leather havingin cross-section a convex side consisting of the grain side of the hide.

4. As an article of manufacture, leather lacing of length greater than the length of the hide comprising a strip of leather having in cross-section a substantially flat side and a convex side, said convex side consisting of the grain side of the hide. I

5. The method of producing leather lacing which comprises splitting a hide into strips, beveling opposite edge portions of said strips from one side thereof, and pressing the beveled strips to cause the side thereof opposite the beveled side to be convex transversely of the strip.

6. The method of producing leather lacing which comprises splitting a hide'into strips, beveli-ng opposite edge portions of said strips from one side thereof, and rolling the beveled strips to cause the side thereof opposite the beveled side to be convex transversely of the strip. V

7. The method of producing lacing which comprises forming narrow strips of sheet material, beveling the opposite edge portions of said strips at one side thereof, and pressing the strips to cause the side thereof opposite the beveledside to be convex transversely of the strip.

8. The method of producing leather lacing which comprises forming narrow leather strips, beveling the opposite edge portions of said strips at one side thereof, and pressing the strips to cause the side thereof opposite the beveled side to be convex transversely of the strip. I

9. The method of producing leather lacing which comprises forming narrow leather strips, bevelingthe opposite edge portions of said strips at the flesh side thereof, and press ing the strips to cause the grain side thereof to be convex transversely of the strip."

10. The method of producing leather lacing which comprises forming narrow leather strips of united lengths of leather, beveling the opposite edge portions of said strips at the flesh side thereof, and pressing the strips to cause the grain side'thereof' to be convex transversely of the strip.

11. The method of producing leather lacing from hides which comprises splitting a hide into strips, beveling the edges of said strips from the flesh side of the leather, and pressing the beveled strips to cause them in crosssection to have convex sides at the grain side of the leather.

12. The method of producing leather lacing from hides which comprises splitting a hide into strips, beveling the edges of said strips from the flesh side of the leather, and passing the beveled strips between presser rolls formed to cause the strips in cross-section to be convex at the grain side of the leather.

13. The method of producing lacing from hides which comprises splitting a hide into relatively wide strips, skiving said strips from the flesh side thereof to form a plurality of strips of uniform thickness, uniting the end portions of said skived strips to form a continuous strip of great length, splitting the united strips into relatively narrow strips, beveling the opposite edges of said narrow strips from the flesh side of the leather, and passing the beveled strips through presser rolls formed to cause the strips in cross-section to be convex at the grain side of the leather.

In testimony whereof, I have signed my name to this specification.

FRANK W. MERRIGK.