US314603A - Shingle-sawing machine - Google Patents

Description

4 Sheets-Sheet 1.

(No Model.)

W. J. PERKINS.

SHINGLE SAWING MACHINE.

Patented Mar. 31, 1885.

W. J. PERKINS. SHINGLE SAWING MACHINE. No. 314,603. Patented Mar. 31, 1885.

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(No Model.) 4 SheetsSheet 3.

W. J. PERKINS.

SHINGLE SAWING MACHINE.

No. 314,603. Patented Mar. 31, 1885.

WITNESSES N. FETERi PhoXa-Limagnphcr. Wmhinglum D. C.

(No Model.) 4 Shets-Sheet 4.

W. J. PERKINS.

SHINGLE SAWING MACHINE. No. 314.603. Patented Mar. 31, 1885.

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SHlNGLE SAWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 314 603, dated March 81, 1885.

Application filed May 7, 1884. (No model.)

To all whom it may concern:

Be it known that I, WILLIs J PERKINS, of Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in Shingle-Ma chines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the'art to which it appertains to make and use the same.

My invention relates to an improvement in shinglemachines, the object being to provide means for preventing the saw from springing up when cutting, thereby enabling the saw to run in close proximity to the dogs without injury; a further object being to provide improved mechanism whereby the tilt-table may be raised and lowered, and held in suitable adjustment for cutting shingles of different thicknesses, for adjusting difference between different saws, and for taking a thick slab off first cut; a further object being to providemeans for quickly and accurately advancing the saw toward the tilt'table, thereby keeping the cutting-edge the same distance from the operator and frame end of tilt-table; a further object being .to provide improved mechanism for giving the saw lead and tightening the belt.

With these ends in view my invention con sists in certain features of construction and combinations of parts, as will be hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a top plan View of my improved machine, showing saw-guides and connecting mechanism. Fig. 2 is a vertical longitudinal sectional View. Fig. 8 is a transverse vertical sectional view from the rear through the line 1 2 of Fig. 1. Fig. 4. is a detached view of the saw-guiding mechanism. Fig. 5 isa View of the machine in side elevation, showing the mechanism for raising, lowering, and adjust ing the tilt-table.

A represents the frame, supported at the front end on the legs a, rigidly secured thereto, and at the rear end by the legs a, pivoted at the top to a depending flange, b of the frame A, and provided with suitable bearings for the saw-arbor b, to the upper end of which the saw B is removabl y secured. The depending flange W, to which the rear framesupport and saw-arbor frame is pivoted, is conveniently provided witha series of perforations, b which admit of the saw-frame being moved squarely forward and pivoted in new positions.

For the purpose of adjusting the saw-head and tightening the belt, I throw out a girder, O, rearwardly from each of the forward legs, near their feet, which girders meet near the center of the base and are rigidly secured together, or the two girders may be formed integral.

A rod, 0, has one end secured in a suitable bracket, 0, the latter being firmly fixed to the lower portion of the saw-arbor frame, while the other end of rod 0 is threaded, and extends forwardly through the meeting portion of the girders G, and is adjustably secured thereto by a nut, o The threaded portion of the rod 0 also passes through a bracket, D, rigidly secured to the floor. The rod 0 is further provided with the adj listing-nuts c 0 and with the slotted washers d. The thickness of one of the washers d is the same as the distance between two of the perforations b", from which construction, it will be observed, I am able to advance the upper end of the saw-arbor frame one step to the front and keep the same adjustment of the head, by pivoting the upper end in the next succeeding perforations and shifting one of the slotted washers to the front side of the girder. Again, by turning the nut c on the rod 0 in contact with the bracket D the entire machine will be moved forward on the floor, and any slack in the driving-belt may thus be taken up. Again, by turning on or off the nuts and 0* the lower portion of the arbor-frame may be advanced or caused to recede, and the arborhead and saw tilted and held in the required adjustment. 7

The method hitherto employed for adjusting the saw-viz., two side rods-is objectionable on account of the obstruction it offered in removing the shingles. My improved construction obviates this difficulty, and affords a simple and effective means of adjustment. The rearward extension of the girders C carries them out of the way of the operators feet, while the ready adjustment of the saw in an advanced position, whenever it becomes worn smaller, keeps the cutting-edge the same distance from the operator, and obviates the awkwardness and labor of reaching farther than is convenient.

E representsthe tilt-table, and S the can riage. The construction of this table and carriage is substantially the same as that described in Letters Patent N 0. 236,620, granted me January 11, 1881; my present invention, as far as it has to do with the tilt-table, having reference more particularly to the mechanism for vertically adjusting it.

e represents the tilt-post, secured in vertical adjustment in suitable bearings in the depending standard F. The lower front portion of the post e is provided with a vertical rack, e. The lower portion of the standard F is provided with a forwardly-extending arm, f, in the end of which one end of a rock-shaft, f is journaled, the other end of said rockshaft being journaled in a depending bracket, The rock -shaft f is provided with a toothed sector, f, rigidly secured thereon, and adapted to engage the rack e on the tiltpost. The shaft f is operated by a spring- .crank, f which extends diagonally upward to a position at or near the corner of the table, within easy reach of the left hand of the operator when in position in front of the machine.

The upper end of the crank f 3 rests in a recess, g, in a movable nut, G. The nut G is adapted to slide between two ways, secured to the corner of the table. The upper way is conveniently graduated, and the nut G provided with an index-pointer adapted to show the exact position of the nut. The nut G is further provided with a threaded perforation through which the operating-screw passes,

the latter being secured against longitudinal movement in a bracket-arm, g

The rack e and toothed sector f 4 in engagement therewith is one of several constructions which may be conveniently used for transmitting the motion of the rock-shaft to the tilt-tablee-as, for example, an arm and link might be usedtherefore I do not wish to limit myself to the particular construction.

The object of the graduated bar 9 and indexpointer is this: It is almost impossible to get two saws to track exactly; that is, there are always two saws used on the machine, one at a time, one being sharpened while the other is in use. Now, one of these will saw the shingle thicker or thinner than the other. It may be caused by the collar being thicker on one saw than on the other by filing or stiffness of saw. To readily adjust this difference, the

operator notes where the pointer stands \on the scale for the different saws, and when the saws are changed he changes the nut and operating-leveraccordingly. For a quick and extended motion of the tilt-table the operator disengages the operating lever from the nut by springing it outward,and gives it the necessary rotary motion, thus instantly and handily lowering the tilt-table, so a thick slab is cut off the shingle-bolt, and the second cut is thereby a shingle.

' In machines hitherto constructed it has not been found practicable to place the metal dog and head-blocks which hold the bolt nearer than three-eighths of an inch above the saw. This produces a loss of from two to five shingles on each bolt, which amounts to the loss of thousands of dollars each day by timber wasted. The loss on five hundred machines working at an average rate being, by actual computation, six thousand, two hundred and fifty dollars per day. Various devices have been invented to reduce this wastesuch as, for example, securing wooden dogs to the metal dogs and allowing them to project below the metal dogs and causing the saw to run between two branches of a guide to keep it from springing, &c.but these devices have failed in practice to accomplish satisfactory results for several reasons. One of the chief objects of my present invention is to overcome the ob jectionable features of the devices heretofore constructed, and provide effective means for saving the two to five shingles heretofore wasted. For this purpose I conveniently provide the main frame A, a little below the tilttable and in close proximity to the tilt-post, with a cross beam, brace, or support, H, and to hold this rigidly I lead a brace, h, from one of the forward legs to the cross-beam near its center. Two plates, I, each provided with a rearwardly-extending perforated lug or projection, t, are secured to the rearward side of cross-beam H, near its ends. A rock-shaft,K, is journaled in the projections 71, and provided at each end with a crank-arm. k, firmly secured thereto. The cross-beam H is further provided with two upwardly-extending T-shaped standards, L, the lower ends of said standards being firmly secured to the beam H, conveniently in positions nearly opposite the plates I, and the upper ends provided with ears 2, one set at each end. Between each forward sets of cars Z one end of an angle-bar, M, is pivoted, the bars M passingrearwardly between the ears Z on the rear ends of the standards L, said ears forming guides to prevent lateral play of the bars M, and at the same time allow the bars a free vertical motion. The downwardly-extending portions of the angle-bars M are provided at their ends with elongated closed slots m, which embrace the outer ends of the crank-arms 76. To the horizontal sections of the bars M the saw-guides N are secured in longitudinal adjustment. The rear ends of the guides N are adapted to hold pieces of wood or other suitable material, a, incontaet with the upper surface of the saw. The rockshaft K,and hence the guides N ,are operated by a lever,O, pivotedbetween two downwardly-extending projections, 0, on

the crank-armk, in such a manner as to admit of a free transverserocking motion; but when moved in a horizontal plane lifts the rear ends of the crank-arms It, bars M connected therewith, and saw-guides N. The lever O'is locked in the required adjustment by falling into either of the opposite recesses 19, formed in the sides of the depending arm 1?; and the lever O is still further adjusted by means of theadjusting-screws 5, adapted to enter the opposite sides of the recesses 2. If more than two saws are used, additional screws may be added by the side of 5, each screw adjusting its respective saw.

By the above construction the saw is successfully held against running up, and I am able to run the head and tail dog very close down to the cutting'edge with perfect safety. Instead of the three-eighths-inch allowance, as hitherto, one-sixteenth inch is now perfectly safe, and it may be run with a skillful operator still closer. The variation in the height of saws, hereinbefore mentioned, is also easily allowed for by the above construction. the lever which operates the saw-guides being adjusted in one of the recesses for one of the saws and in the other recess for the other saw, and when the saw is taken off the lever may be thrown to the rear, and thus lift the guides out of contact with the'saw. The longitudinal adjustability of the guides admits of their being held in contact with the saw at the same distance from the cutting-edge, as the saw is smaller or larger.

It is evident that the construction and arrangement of the several parts herein described may be somewhat changed without departing from the spirit and scope of my invention; hence I'do not wish to limit myself strictly to the construction herein set forth; but,

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a shingle-machine, the combination, with a saw and a bolt-carriage, of a guide adapted to rest in contact with the bolt side of the saw and prevent the same from spring ing or running up, substantially as set forth.

2. In a shingle-machine, the combination, with a saw and a carriage provided with a head-block and tail-dog, of two saw-guides, situated, respectively, immediately behind the head-block and tail-dog, to prevent the saw from coming in contact with said head-block and tail-dog, substantially as set forth.

3. In a shingle-machine, the combination, with a saw and a carriage provided with a head-block and dog,of one or more saw-guides on one side of the saw, the said guide or guides having longitudinal and vertical adjustments, substantially as set forth.

4. In a shinglemachine, the combination, with a saw and a carriage provided with a head-block and dog, of two or more sawguides adapted to rest on the saw and a rod or shaft connected with the guides for operating them, substantially as set forth.

5. In a shingle-machine, the combination, with a saw and a carriage provided with a head-block and dog, of two or more sawguides, a handle or lever connected with the operatingrod, said handle or lever being hinged so as to have a free lateral movement in the direction of the length of said rod,but held rigidly against a horizontal rotary motion with reference to said operating-rod,substantially as set forth.

' 6. In a shingle-machine, the combination, with a saw and a carriage, of a saw-guide and one or more adjusting-screws or their equivalent, each screw adapted to adjust the guide for the saw it represents, substantially as set forth.

7. In a shingle-machine, the combination, with a carriage, of a tilt'table located below the carriage, a post depending from said tilttable, and provided with teeth, a pinion or a segment engaging the teeth, a lever for elevating the table,and a bracket through which the post passes, substantially as set forth.

8. In a shingle-machine, the combination, with a vertically-adjustable tilt-table and a rack and pinion or its equivalent for adjusting the table, of a crank or handle adapted to operate the pinion and an adjustable nutprovided with a recess adapted to receive the handle, substantially as set forth.

9. In a shingle-machine, the combination, with a verticallyadj ustable tilt-table and an operating crank or handle, of a longitudinally-adjustable nut adapted to receive the said handle, the nut being provided with an index hand or pointer and a graduated scale, substantially as set forth.

10. In a shingle-machine, the combination, with a saw j ournaled in a swinging frame or leg, of a single rod or brace and locking devices for adjusting the lead of the saw, substantially as set forth.

11. In a shingle-machine, the combination, with a swinging saw frame or leg and a bracket secured to the floor, of a central rod provided with a thread and nut, whereby the whole machine is horizontally adjusted and saw-driving belt tightened, substantially as set forth.

12. The combination, with a shingle-machine frame, of a saw-arbor frame or legs adjustably secured to said machine-frame,whereby the saw-arbor frame can be moved toward and away from the operator.

13. In a shingle-machine, the combination, with the main frame provided with two series of perforations situated transversely opposite and a removable sawarbor frame adapted to be secured at its upper end in said perforations, of a horizontally-adjustable brace connected with the foot of the arbor-frame,whereby the saw is moved squarely forward, substantially as set forth.

14. In a shingleqnachine, the combination, I In testimony whereof I have signed. this 10 with the main frame having a saw-arbor specification in the presence of two subscribframe for its rear support, the upper end of ing witnesses. said saw-arbor frame being horizontally ad- 5 justable in the main frame, of a rod or brace WILLIS J. PERKINS.

adapted to horizontally adjust the bottom of the arbor-frame and washers adapted to em- \Vitnesses: brace the rod and facilitate the adjustment, ARTHUR S. DENISON, substantially as set forth. FRED W. STEVENS.

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