US572352A

US572352A - Nventdr i

Info

Publication number: US572352A
Authority: US
Publication date: 1896-12-01
Anticipated expiration: 1913-12-01

Description

(No Modei.) 2 sheets-sheet 2..

' C. A. BONNEY.

LEATHER SNIPPING MACHINE.

Patented Dec. 1, 1896,-

Y www UNITED H STATES PATENT i OFFICE.

CHARLES A. BONNEY, OF BROCKTON, MASSACHUSETTS, ASSIGNOR TO THE BROCKTON FOLDING MACHINE COMPANY, OF SAME PLACE.

LEATHER-SNIPPING MACHINE.

SPECIFICATION forming part of Letters Patent No. 572,352, dated December 1, 1896.

Y Application filed February 6, 1896. Serial No. 578,214. (No model) To all whom it may @H/067W: b and form a corresponding number of slits Be it known that I, CHARLES A. BONNEY, therein, the depth of the slits depending upon of Brockton, in the county of Plymouth and the projection of the blades from the carrier. State of Massachusetts, have invented certain The carrier is preferably guided by means of 5 5 new and useful Improvements .in Leathervertical rods d d, affixed to the fraine of the Shipping Machines, of which the'following is machine and connected at their upper endsl a specification. by a cross-bard', the carrier having sleeves Y This invention has `for its chief object to c2 c2, whichy are adapted' to slide upon said provide a machine adapted to cut a plurality guides, their upward movement being limited 6o 1o of slits or incisions in one edge of a piece of by the cross-bar d. The carrier is normally leather, such as a boot or shoe upper. raised to hold the knives above the pile of It is a common practice to fold inwardly one pieces on the bed7 preferably by means of a edge of an upper and cement the inwardlyspring e, interposed between a fixed bearing turned portion against the inner side of the or support e' and a collar e2, affixed to a ver- 65 body of the piece to conceal the raw edge of tically-rnovable rod e3, the upper end of which the piece. Said edge havin ga rentrant curve, is attached to the carrier c. The spring is arit is customary to cnt a plurality of slits from ranged to normally contract, and thus raise the edge a short distance into thebody along the rod e3, holding the sleeve c2 of the carrier said curvein order that the fold may be evenly against the cross-bar d'. The rod e3 may be 7o 2o formed. connected with a treadle (not shown) whereby 1 My invention relates to a machine for makit may be depressed to depress the carrier and ing the slits above mentioned; and it consists cause the knives to act on the pieces b. The

in the several improvements which I will now front side of the carrier c, from which the proceed to describe and claim. knives c project, is curved to correspond to 75 Of the accompanying drawings, forming a the curvature of the edge of the upper on part of this specification, Figure l represents which the knives act and is provided with a front elevation of my improved slitting-madownwardly-projecting arms e303, which serve chine, the presser-foot being removed. Fig. as gages or recesses against Which the edges 2 represents a perspective view of the knife- 2 of the pieces b bear. Said arms also serve 8o p 3o carrier. Fig. 3 representsa perspective view to limit the downward movement of the carof the presser-foot. Fig. 4 represents a top rier and knives by striking a shoulder a',

plan view of the machine. Fig. 5 represents formed on the supporting-frame. The knives a section on line 5 5 of Fig. 4. c are preferably inserted in transverseslots The same letters of reference indicate the formed in the upper surface of v-the carrier c 85 3 5 saine parts in all the figures. and are secured therein by a clamping-plate In the drawings, d represents a work-snpc4, afiixed by bolts c5 to the carrier. porting bed having a fiat upper surface adaptf represents a presser-foot which is adapted ed to support a pile of pieces b of substantially to bear upon the upper surface of the pile of the form shown in Fig. 4, each piece having pieces b and to hold the same in close prox- 9o 4o an edge 2, which has a rentrant curve. imity to the points where the knives act on c represents a knife-carrier, which is movsaid pieces, one edge of the presser-foot being able in fixed guides attached to the frame of curved to conform to the curvature of the the machine and is provided with a gang of forward edge of the carrier, as indicated in slitting-knives c', Which project from one edge Figs. 3 and 4. The presser-foot f is affixed 95 of the carrier and are arranged to form slits to a barf, which has a limited sliding movein the rentrant curves of the pieces b, the ment in a socket g, formed in a standard g', carrier c being movable crosswise of the bed which is secured to the carrier c preferably a and at right angles with the supportingby being formed on or aihxed to the clamp c4. surface thereof, so that when the carrier is The presser-bar f has a collar f2 afiixed to reo 5o'depressed from the position shown in Fig. 5 its upper end, which bears upon the upper the knives will move across the pile of pieces end of the socket g and limits the independent downward movement ofthe presser-bar, a spring f3 being interposed between said socket and the presser-bar and permitting the presser-foot to yield upwardly.

The operation is as follows: The carrier c and presser-foot are normally held by the spring e in the position shown in Fig. 5, the presser-foot and knives being raised sufficiently above the bed d to permit the insertion of the pieces h between the presser-foot and bed. The operator then depresses the carrier c, thereby causing the presser-foot to bear upon the pile of pieces and securely hold them, the downward movement of the presserfoot being thus arrested, while the carrier continues to descend, the knives being thus caused to slit the edges of the pieces l). The arms c3 are formed to arrest the downward movement of the carrier just as the knives have slitted the lowest piece in the pile and before they can come in injurious contact with the bed. The operator then releases the carrier, which is raised by the spring e, the presser-foot being raised with it, thus releasing the pieces.

I claiml. In a machine of the character described, the combination of a work-supporting bed, a knife-carrier movable at right angles thereto and across the end of the same and having a projection constituting a gage for the edges of the work to abut and also a stop to limit the movement of the carrier; and knives fastened in said carrier and projecting over the bed.

2. In a machine of the character described, the combination of a supporting-bed, a carrier movable on iixed guides, a gang of knives affixed to the carrier, a rod affixed to the cai rier and projecting-downwardly therefrom, a retractile spring surroundingl said rod and fastened at the lower end to the same and at the upper end t0 a fixed support, a guide affixed to the carrier and overhanging the supporting-bed, a presser-bar movable in said guide, a presser-foot affixed to said bar, and a spring interposed between the foot and guide.

3. In a machine of the character described, the combination of a work-supporting bed, a carrier movable across the end of the said supporting-bed and having transverse slots in its upper side; knives engaging said slots and projecting over the bed a clamping-plate arranged over said knives and having an upstanding arm with a guide overhanging the bed; and a presser-foot whose stem engages said guide.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 14th day of vJanuary, A. D. 1896.

CHARLES A. BONNEY.

Witnesses IVARREN A. REED, HENRY F. PARKER.