US331839A - Shingle-slicing machine - Google Patents

Description

2 SheetsSheet 1.

(No Model.)

0. H. 8: J. B. SPENCER.

SHINGLE SLIUIVNG MAGHINE. No. 331,839. Patented Dec. 8, 1885.

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2 Sheets-Sheet 2..

(No Model.)

0. H. & J. B. SPENCER SHINGLE SLIGING'MAGHINE.

No. 331,839. Patented Dec. 8, 1885.

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CHARLES H. SPENCER AND JOSEPH B. SPENCER, OF NIANTIC, CONNECTICUT.

SHING'LE-SLICING MACHINE.

SPECIFICATION forming part of Letters Patent No. 331.839, dated December 8, 1885.

Application filed June 17, 1885.

To all whom it may concern.-

Be it known that we, CHARLES H. SPENCER and JOSEPH B. SPENoER, citizens of the United States, and residents of Niantic, in the county of New London and State of Connecticut, have made certain new and useful Improvements in Shingle-Machines, which improvements are fully set forth and described-in the following specification, reference being had to the two sheets of drawings hereunto annexed, in which- Figure l is a front elevation, and Fig. 2 an end elevation, of said machine. Fig. 3 is a rear elevation; Fig. 4, a vertical section, somewhat enlarged, on line was of Fig. 3, and Figs. 5 and 6 show detached the devices which we use to automatically adjust the back gage, as hereinafter fully described. Fig. 7 is an enlarged face view of the gear v and the pawl and ratchet-disk forming a part of the adjusting device shown in Figs. 5 and 6.

Our invention relates to that class of shingle-machines by means of which so called "shaved shingles are formed, our immediate object being to produce, by means of certain new combinations of mechanical principles, a machine which, while simple in construction, shall producea smoother shingle than heretofore, and which may be quickly understood and easily operated. 7

Referring to the accompanying drawings, the letters A B C represent the supporting- -frame of our improved machine, said frame being made of wood or other suitable material, and of a size and strength sufficient to receive and support the several other elements of said machine.

On the inner sides of the uprights A B are ways a a, in which slides vertically a rectangular frame, E, which we prefer to make of wood, and which is capable of moving a distance somewhat greater than the width of the widest shingles to be shaved.

Extending across the front of the machine, and secured to the uprights A B, is a bed, F, on which the block to be cut rests, as will be understood by referring to Fig. 2, said block being held from endwise movement by'gage pins or studsbb, which may be secured fixedly to the bed F, or may be adjustable to receive blocks of greater or less length. These gage- Serial No. 168,927. (No model.)

pins 12 I) also form guards to keep the operators hands from contact with the descending knife while in the act of making a out. In order to move the knife diagonally as it descends, so as to produce a drawing cut,we have provided a system of racks and gearslocated and operating as follows: Near the upper end of the vertically-movable frame E are short shafts d (I, held in bearings e e, and having secured to their rear ends gears G G, the former engaging a rack, f, secured to. the upright A, and the latter, G, engaging a similar rack, f, whose upper end is secured to the cross-frame C. The lower end of rack f has a right-angular bend extending to frame 13, to which it is securely attached. The carriage E is recessed immediately in the rear of gears G G, (see Fig. 4,) and within said recesses on the shafts (1 cl, before referred to, are gears h h, which engage racks 2' i, secured to the inner side of the knife H, for the purpose of moving said knife diagonally as it descends. It will now be understood that as the knife-carriage E descends the shafts d cl are caused to rotate by the engagement. of gears G G with the racks first above described, and also that the knife H is caused to travel endwise by the engagement of gears h h with racks i i. The knife-carriage E may be moved vertically by foot-power, or, preferably, by a pitman, K, which, reaching through the floor, connects with a counter or crank shaft. The knife-racks t t have an inwardly-projecting rib or flange which rest and travels on a metal plate, m, secured to the carriage E, (see Fig. 4,) thus forming a support and guide-track for the sliding knife.

Secured to the carriage E are two or more cross-bars, N O, perforated to receive rods 11.

n, attached to vertical bars 0 0, said vertical bars being located on the front side of the cross-bars N O, and held rearward by springs s 8, located on the rods 12 it, above described. The vertical bars 0 form a back gage for the block to be cut, and in order to automatically gage said block so that the butt or thick end of the shingle shall be cut at alternate ends we have provided a peculiar system of eccentrics, gears, and ratchets, which we will proceed to describe.

p p represent shafts hung in suitable bearings on the knife-carriage E, and adapted to move with said carriage.

Immediately in the rear of the back gages, 0, we have secured to shafts p p eccentrics t t, and by referring to Fig. 6 it will be understood that as shafts p p rotate the eccentrics force the gage-bar forward, acting against the power of springs s, which, as the eccentrics continue their round, bring said gagebar back to its normal position. The eccentrics t are set one-half of a revolution ahead of eccentrics t, so that while one of the gagebars 0 is forced outward its mate is in its normal position, their positions being reversed at each succeeding half-revolution of shafts p 1).

On the inner side of frame B is a rack, P, which is engaged by gears '12 o, fitting loosely on shafts p 1). Each of said gears 12, carries a spring-pressed pawl, w, which under certain conditions engages ratchet-disks p 1). (See Fig. 7.) As the knife-carriage E rises after having completed a cut the pawls engage one of the ratchet-teeth, causing shafts p p to rotate one-half of a revolution, which action reverses the position of the gage-bars 0, as above described, ready for the next cut. When the carriage E is descending, the gears v rotate freely on their axial shafts, and as the pawls ride freely past the ratchet-teeth the positions of the eccentrics and back gears are not changed.

The wood which it is desired to cut into shingles we first prepare by steaming, which action softens the fiber and allows the'knife to pass more easily through said wood.

For greater convenience in handling, we prefer to quarter the logs to be used, although sections of any shape may be used by first removing a slab from one side, as in Fig. 6.

The log is now placed on bed 15 between the end gages, I), being held by the operator firmly against the back gages, 0. The knife now descends and shaves off a wedge-shaped section, and this operation is continueduntil the entire block is cup up into shingles.

Having thus described our invention, we claim as new and wish to secure by Letters Patent- 1. The combination, with the reciprocating frame, of the horizontal and vertical gages, the shafts secured to the same, the eccentrics mounted on the said shafts, and the mechan ism whereby the positions of the gage-bars are changed, substantially as and for the purposes specified.

2. The combination, in a machine for shaving shingles, of the vertically-moving carriage E, the perforated cross-bars NO, the rods nn, attached to vertical bars 0 0,which are located on the front side of the cross-bars N O, the

springs S S, located on the rods n n, the camst, mounted on the shafts p, and the cog-gearing, whereby said cams are operated to operate the gage-bar, substantially as specified.

3. In a machine for shaving'g'ishingles, the combination, with the vertically-reciprocating frame and its racks, and the intergearing pinions mounted on a common shaft, of the knife-bar and its rack, and the brackets in which the knife-bar is arranged to move diagonally across the frame, substantially as and for the purpose specified.

CHARLES H. SPENCER. JOSEPH SPENCER.

Witnesses:

M. W. COMSTOOK, O. M. SMITH.

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