US1149483A - Sawing-machine. - Google Patents

Description

S. E. WALLING.

SAWING MACHINE.

APPLICATION man mman. |914..

C Attorneys S. E. WALUNG.

SAWING MACHINE.

APPLICATION FILED APiLso, 1914.

Patented Aug. 10, 1915.

Attorneys l f ED sTATEs PATENT oEEIoE.l

SAWING-MACHINE.

Specification of Letters Patent.

`Patented Aug. 10, 1915.

Application filed April 30. 1914. Serial No. 835,485.

To all whom t mag/concern:

Be it known that I, SAMUEL E. VALLING, a citizen of the United States. residing at Bellingham, in the county of lVhatcom and State of Washington, have invented a new and useful Sawing-Machine, of which the. following is a specilication.

This invention relates to drag saws, one of its objects being to provide a compact and light machine of this character which can be easily transported by one or more persons, can be set up quickly, and will not readily get out of order.

lith the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, can be made within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawings the preferred form of the invention has been shown. y

In said drawings, Figure 1 is a side elevation of the machine the same being shown connected to a log to be cut. Fig. 2 is a plan view of the machine. Fig. 3 is an end view of the guide segment and the slide engaging the same. Fig. 4 is a perspective view of the butt end of the saw and of the adjacent portion of the pitman, the links employed for causing the saw. to rock, being also shown. Fig. 5 is an enlarged section on line A-B Fig. 2. Fig. 6 is a detail view showing the means for fastening the saw in raised or inactive position.

Referring to the figures by characters of reference 1 designates the mainv beam of the machine,'the same being parallel with and extended forwardly beyond a side beam 2, and both of these beams being provided with brackets 3 detachably engaging an axle 4 supported by wheels- 5.

Connected to the forward end of the beam 1 is ay yoke 6 in which a spike 7 is slidably mounted, there being a spring 8 interposed between the yoke 6 and the head of the spike for the purpose of holding the spike normally elevated relative to the yoke. A coly lar 9 may be formed on or secured to the that when the yoke 6 is placed above a log L, the spike 7 can be driven into the log without jarring the beam`1 to an undesirable extent, the spring 8 constituting a cushioning means for relieving the beam from the force of the blow. As long as the spike 7 is in engagement with the log L, the machine will be held in proper position to cut the log.

i Handles 10 are extended from the rear ends of the beams 1 and 2 and the front end of beam 2 is connected to beam 1 by a cross strip 11` A tool box 12 or the like may be .arranged in front of the cross strip or beam 11.

Eye bolts 13 are connected to the beams 1 and 2 and receive trunnions 14 extending laterally from the rear end of a triangular frame 15, this frame being provided with a forwardly extending obliquely disposed arm 16 the free end of which has a guide block 17 depending therefrom and formed with a groove 18 adapted to receive the upper end portion of the saw hereinafter described. The frame 15 is mountedl to swing freely, as will be apparent by referring to Fig. 1.

Secured to one side of the beam 1 is an arcuate guide bar 19 made up of an angle strip the inwardly extending iange of which is offset as at 20 so as to lie flat against the outer side of beam 1. This offset portion is bolted or otherwise secured to the beam. The bar 19 constitutes a guide for a slide made up of nested angle strips 21 which are bolted together and have their side flanges spaced apart a suiicient distance to receive between them a portion of the guide 19. Rods 22 are bolted orotherwise secured to the strips 21 making up the slide andA the rear ends of these rods converge toward each other and are secured to blocks 23 pivotally mounted on a shaft 24 which is journaled in the beams land 2. The rods 22 are `held apart-not only by the strips 21 but also by a. cross strip- 25, and those portions of the rods between strip 25 and strips 21 constitute a track on which is slidably mounted a cross head 26. -A gear 2 7 is mounted for rotation on the shaft 24 and has a wrist pin 28 adjustably mounted thereon and engaging a pitman 29. This pitman 29 engages another wrist pin 30 outstanding from the cross head 26. Another wrist pin `31 is eX- tended from the cross head 26 and is pivotally engaged by a block 32, there being a link 33 engaging the outer ends of the wrist 34 is extended and overhangs i the pitinan 29, and a web 35 is extended up- `wardly from the pitman. A link 3G is adapted to be adjustably connected to the web 35 and to the tongue 34. A saw blade 3T is iixedly connected to the block 32 and its upper edge seated in the groove 18 in block 17.

It will be apparent from the foregoing that when gear 27 is rotated, pitman 29 will reciprocate the cross head 2G upon the rods 22, thus producing a back and forth movement of the saw blade 37.- At the same time. as the pitman 29 swings upon the wrist pin 30, the link 36 will push and pull upon the tongue 34, thus setting up a rocking motion ofthe saw 37 as the said saw is reciprocated. This rocking motion is very desirable in that it results in clearing the teeth of sawdust and renders the saw more efficient in operation.

During the reciprocation of the saw 37 it will be guided by the block 17 and while the saw is resting on the log L, it will feed downwardly by gravity into the log, this downward movement being permitted in view of the fact that the slide made up of strips 21 is free to travel along the guide 19 and to even project downwardly beyond the lower end of the guide.

For the purpose of actuating the saw, a motor 38 is mounted between the beams 1 and 2 and drives a shaft 39 to which is secured a iy wheel 40, this fly wheel having a flat clutch face 41. A fixed cam 42 is arranged about the shaft 39 and cooperating with this cam is a movable cam 43 adapted to be actuated by a lever 44 or in any other suitable manner. Rods 45 are slidably mounted within the hub of the wheel 40 and are connected at one end by a disk 46 and at their other end by a disk 47. Disk 46 bears against a roller bearing 48 carried by a disk 49 fitted against the movable cam 4.3, while disk 47 bears against a roller bearing 50 interposed between disk 47 and another disk 51. These two disks 47 and 51 are housed within a tubular hub 52 extending outwardly from a disklike friction clutch member there being a pin 54 extending axially from the shaft 39. On this pin is mounted a 'sprinfr 55 which bears against the outer end ofthe hub 52 and thus operates to hold the clutch member normally pressed against the clutch face 41 and also to hold the rods 45 normally shifted inwardly so as thus to maintain the cam members 42 and 53 in engagement with each other as shown in Fig. A gear 5G rotates within the hub 52 and meshes with gear 27.

It will be understood that under normal conditions shaft 35). when driven by the motor, will cause the clutch member to rotate with the wheel 40and gear 5G to drive gear 27. However, should it be desired to stop the actuation of the gear 5G and gear 27, it merely becomes necessary to rotate cam 43 whereupon the beveled face 57 of the cam will ride upon the beveled face 58 of cam 42, thus causing rods 45 to shift longitudinally within the rotating hub of wheel 40 and push the hub 52 and gear 56 laterally, thus disengaging the clutch member 53 from the clutch member 41.

By providing the wheels 5, the machine can be easily transported from place to place and, if desired, these wheels and the axle 4 can be removed while the machine is in use.

By adjustably mounting the links 3G, the degree of oscillation of the saw blade can be varied and by adjustably connecting the pitman 29 to the gear 27. the amount of movement of the saw during its reciprocation can be varied.

As heretofore stated, when the machine is not used for sawing purposes, it can be' used for various other purposes. For eX- ample` the pitman 29 can be disconnected from the wrist pin 30 and from the links 36 and can be attached to any other machine to be driven or` if preferred, the pitman can be disconnected from the gear 27 and said gear connected in any suitable manner to machinery of different kinds.

There a hydro-carbon engine is used, as shown in the drawings, a fuel tank 58 is preferably supported between the beams 1 and 2.

In order that the guide rods 22, and the slide 21 may be supported in elevated position with the saw 37 raised. whether or not the saw is in motion, the slide 21 is provided with an opening 59 while a series of angular notches G0 are formed in the guide bar 19. One of the rods 22 is extended through the slide 21 and has a terminal head G1 on which a sleeve 62 is slidably mounted. The inner end of this sleeve is slidably mounted on the projecting portion of the rod 22 and constitutes the bearing for one end of a coiled spring 63, the other end of the spring bearing against the head 61. A, stud or projection 64 is carried by the inner end of sleeve 62 and normally projects into the opening 59 so that, when said opening is brought into register with any one of the notches 60. the said stud 64 will be shifted into the notch 60 toA thus hold the slide 21 against downward movement along the guide 19. However, when the stud 64 is brought to a position below the lowermost notch (30. the slide and the saw 37 will be free to gravitate in the manner hereinbefore described. For the purpose of withdrawing the latch from engagement with the guide 19. it is merely necessary to grasp the sleeve (l2 and pull itoutwardly against the spring (33. By means of this latch the slide 21 can be supported in an elevated position7 thus holding the saw 3T raised whether said saw is in motion or at rest.

Especial importance is attached to the particular means shown in Fig. 5 whereby the engine can be caused to run free whenever desired and wherebv the parts are free to slip should the saw become jammed or disarranged. It is also to be understood that the connection shown in Fig. 4 can be varied so as to be located under the pitman instead of above it, if desired.l

lVhat is claimed is A wood sawing machine including an angularly adjustable track, a cross head thereon, a pitman pivotally connected to the cross head, means for actuating the pitman', a link attached to the saw and to the pitman at its point of connection to the cross head, and a shorter link adjustably connected to the saw back of its point of connection with the longer link and adjustably connected to the pitman at a point other than that of its connection with the longer link.

In testimony that I claim the foregoing as my o\vn,-I have hereto affixed my signature in the presence of two Witnesses.

SAMUEL E. VALLING. lVitnesses:

CLARENCE B. PECK, E. P. WALLING.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. G.

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