US1584789A

US1584789A - Machine for handling blanks

Info

Publication number: US1584789A
Application number: US624477A
Authority: US
Inventors: Ralph S Megathlin
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1923-03-12
Filing date: 1923-03-12
Publication date: 1926-05-18
Anticipated expiration: 1943-05-18

Description

May 18 1926.

R. S. MEGATHLIN MACHINE FOR HANDLING BLANKs Filed March'lZ. 1925 atented May 18, 1926.

UNITED STATES PA'rsNrorI-lcs RALPH S. MEGATHLIN, OF WEST SOMERVILLE, MASSACHUSETTS, ASSIGNOR T i UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A COR- PORATION' OF NEV JERSEY.

" MACHINE FOR HANDLING IBLANKS.

Application filed March 12, 1923. Serial 624,477.

This invention relates to Vmechanism for feeding blanks and is herein illustrated as embodied in a machine forskiving box toe Y Accordingto one feature of the present invention, there is provided, adjacent the means for holding a stack of blanks in position to be fed, a carrier upon which a second stack may be built while the members of the first stack are being fed, said carrier being movable to place the second stack in such position that its members will be engaged Vby the feeding means when the members of the first stack have been fed. With such a construction, a second or succeeding stack may be built up during the time thaty the first or preceding stack is being fed soithat practically n0 time is wasted. In the illustrative machine there is provided an open-sided magazine for a stack of blanks from the bottom of which the blanks are fed one by one, and located in front of the open side is a pivoted carrier upon which the second stack .may be built. As soon as a predetermined part of it has been fed, the carrierrmay be swung to deposit the second stack in the magazine.

This and otherfeatures of the invention, including certain details of construction and combinations of parts will be described as embodied in an illustrative machine and pointed out in the appended claims.

Referring now to the accompanying drawings, Y

Figure 1 is a perspective of the magazine, table and carrier of aV box-toe skiving machine in which the present invention is embodied.

Figure -2l is :a vertical longitudinal section throughv a portion of the machine, and Figure 3 is a detail partly in section and the first stack, or

partly in elevation showing more particularly the yielding means for holding the carrier midway between 'certain guides.

The machine chosen for illustration is .Y or

' maybe substantially the same in many particulars as thatshown and described in the patent to Scott No. 969,987; and, before proceeding to a detailed description of the new construction, the old construction Vwill bel l briefly described. The machine comprises a feed roll 5 and a matrix roll 7 by which the blanks are properly presented one at a time to a knife 9. The blanks are fed intimed relation to the rolls by a reciprocating feed slide 11 from the bottom of a stack of blanks 13 which are held in an open-sided magazine consisting of a back wall 15 and side walls each comprising two

members

17, 19. The members 19 of the side walls are adjustably fastened toa table 21 by cap screws 23 so as to be adjustable toward and from each other; and the table is adjust-ably fastened to the bedby cap screws 25 so as to be adjustable forward and back in the line of feed movement, the feed slide 11 and its actuating mechanism being located beneath thel table. Resting upon the top of the stackv is a weighted presser 27 having formed upon one side of its stem a rack 29. As the stack is decreased in height by the removal of blanks fromthe bottom, the presser descends until a set screw 31 strikes a lever 32, whereupon a pinion (not shown) acts upon the rack 29 to raise the presser so that a second stack of blanks may be placed in the magazine, At the same time that the presser is raised, the feed slide is disconnected, the machine remaining idle while the new stack is, being placed in the magazine. The operator then manipulates a treadle (not shown) whereupon the presser is permitted to descend and the feed slide begins once more to feed the blanks to the skiving mechanism. The construction thus far dscribed is or may be substantially machine and will not be further described.

Hitherto in the operation of this machine, it has been customary for the operator to build up each stack of blanks in the magazine, the machine, of course, being idle during this building up` process, with the result that ya considerable amount of time has thus been lost. In order to do away with this the sameas that of thepatented loss of time the machine of the present. invention is provided with a carrier upon which a succeeding stack of blanks may be built while the preceding stack is being operated upon. This carrier takes the form of a thin comparatively narrow plate 33 having an up-turned outer end 133. rlhe inner end of the carrier has an eye through which passes a slender rod 35 the ends of which extend into sockets in the side members 19, said rod passing through slots 36 in the members 17. r.The rod 35 is slightly above the level of the top o-f the table Q1 so that normally he main portion of the carrier 33 is inclined downwardly away from the open-sided magazine in which is held the stack of blanks which is being' fed. In order to facilitate the building of a second or succeeding stack on the carrier 33, two guides 37 are provided. These guides are fast at their inner ends one to each of the members 17 so that when those members are adjusted, the guides are adjusted with them. These guides are provided with slots 38 which register with the slots 35 in the members 17. It is desirable that the carrier 33 be maintained midway between the. guides 37 irrespective of the distance Iapart to which the guides may be adjusted. To this end the carrier has a depending lug Q33 extending downwardly from its under side, and to this lug are attached the adjacent ends of two tensionsprings 39 the outer ends of which are attached to hooks, one of which is shown at 41, said hooks being carried one by each of the members 19. The springs are of equal strength and thus balance each other and hold the carrier midway between the guides when the members 17, and with them the guides 37, are caused to approach or to separate from each other.

In the operation of the machine, assuming that the presser 27 is being held in raised position and that the feed slide is at rest, a stack of blanks is built up or placed in the magazine with its base resting upon the flat bed 43. The operator then manipulates aI treadle which causes the presser to descend and the feed slide to reciprocate. The blanks are fed one by one from the bottom of the stack until the end of the screw 31 Vstrikes and depresses the lever 32, whereupon the feed slide comes to rest and the presser is raised and held raised. lVhet-hcr the blanks of the stack have all been fed, or whether a few still remain in the bottom of the magazine, depends upon the position to which the screw 31 has been adjusted. All this mode of loperation is the same as that of the machine of the patent.

During the time that the first stack is being fed, the operator builds a second or succeeding stack upon the carrier 33 in the manner shown in Fig. 2. As soon, therefore, as the members of the first stack, or most of nes/e789 them, have been fed and the presser 27 has been raised, the operator swings the carrier 33 from horizontal to vertical position about the rod 35 and thereby places the second stack in posit-ion to be acted upon by the feed mechanism. It is thus possible to keep the machine running almost continuously instead of having its operation interrupted for a considerable period at regular intervals to permit the operator to build up a succeeding stack in the magazine.

Although the invention has been sct forth as embodied in a particular machine, it sho-uld be understood that the invention is not limited in the scope of its application to the particular machine which has been shown and described.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is 1. Mechanism for handling blanks comprising means for holding a stack of blanks and for feeding blanks one by one from the bottom of the stack, and a carrier supported in position to permit a second stack to be built upon it while the members of the first stack are being fed, said carrier being movable to place the second stack in position to be engaged by the feeding means when the members of the first stack have been fed.

2. Mechanism for handling blanks comprising a magazine for a stack of blanks, mechanism for feeding the blanks one by one from one end of the stack, a presser adapted to press upon that end of the stack which is remote from the feed mechanism and to be withdrawn when the stack has decreased to a predetermined extent, and a carrier for a second stack movable to place said second stack between the presser and the feed mechanism.

Mechanism for handling blanks comprising a magazine for a stack of blanks, mechanism for feeding the blanks one by one from one end of the stack, a presser adapted to press upon that end of the stack which is remote from the feed mechanism and to be withdrawn when the stack has decreased to a predetermined extent, and a carrier pivoted adjacent the magazine and capable of being swung to deposit said second stack in the magazine when the presser has been raised.

Ll. Mechanism for handling blanks comprising an open-sided magazine for holding a stack of blanks, means for feeding blanks from the bottom ot the stack whereby the stack diminishes in height, and a carrier for a fresh supply of blanks supported in posit-ion to permit a second stack to be built upon it while members of the first stack are being fed, said carrier being movable when the height of the first stack has been sufficiently decreased to bring the second stack into a position in which its members Lesage@ 'Will be fed after the members of the first stackhave been `fed. Y

5. Mechanism for handling blanks comprising an open-sided magazine for holding a stack-of blanks, means for feeding blanks from the bottom of the stack Whereby the stack diminishes in height, and a cari'ier.for a fresh. supply of blanks supported in position topermit a second stack to be built upon it While members of the first stack are being fed, said carrier being pivoted about an axis located adjacent the first stack so as to be movable When the height of the first stack has been sufiiciently decreased to bring the second stack into a position in which its members will be fed after the Vmemloers of the first stack have beenfed.

6. Mechanism for handling blanks comprising of blanks, said magazine having a back Wall and adjustable side Walls, a pail` of guides carried by the side walls, and a carrier for a second stack oi blanks located between the guide-s and movable to deliver the second stack to the magazine.

an open-sided magazine for a stackY 7. Mechanism for handling blanks comprising an open-sided magazine for a stack of blanks, said magazine having a back Wall and adjustable side Walls, a pair of guides carried by the sidewalls, a carrier for a second stack of blanks located between the guides and movable to deliver the second stack to the magazine, and means 'for maintaining the carrier substantially midway between the guides irrespective of the positions into which the guides may be adjusted.

8. Mechanism for handling blanks comprising a support for a stack of blanks, means for feeding the blanks one by one from the bottom of the stack, and a carrier adapted to permit a second stack to be built upon it While the members of the first stack are being fed, said carrier being movable to superpose the second stack upon the top of the first stack when the height of the first stack has been sufciently reduced.

In testimony whereof I name to this speciiication.

RALPH S. MECML'IHLIN.r

have i signed my