US743203A - Portable wood-sawing machine. - Google Patents

Description

No. 743,203. PATENTED Nov. 3, 1903. E. E. SWARTHOUT.

PORTABLE WOOD SAWING MACHINE.

APPLICATION FILED JULY 29.1903.

N0 MODEL. 2 SHEETS-SHEET I.

Wu ass 5 n m. W y a 6 I @Aliomyzys No. 743,203. PATENTED N'0V.'3, 1903.

E. E. SWARTHOUT. PORTABLE WOOD SAWING MACHINE.

APPLICATION FILED JULY 29 1903.

N0 MODEL. 2 SHEETS-SHEET 2.

. I cilllergcys UNITED STATES Patented November 3, 1903.

PAT NT OFFICE.

PORTABLE WOOD-SAWING MACHIN E.

SPECIFICATION forming part of Letters Patent N 0. 743,203, dated November 3, 1903.

Application filed-Tuly 29. 1903.

simple and inexpensive wood-sawing machine adapted to be readily transported from place to place and susceptible of being set in position for operation with a minimum loss of time and adapted to be readily put in condition for transport to another point immediately after the machine is stopped.

A further object of the invention is to provide a wood-sawing machine of the class described which may be set in position for operation without blocking and which will be held with sufficient rigidity to permit the machine to be driven by means of a suitable motor.

With the objects above stated in view the invention consists in the construction and combination of parts of a portabl'e wood-sawing machine, hereinafter described and claimed and illustrated in the accompanying drawings, forming part of this specification, it being understood that various changes in the form, proportions, and exact mode of assemblage of the elements exhibited may be made without departing from the spirit of the invention or sacrificing the advantages thereof.

In the drawings, Figure 1 is a view in side elevation of the machine in operative position, the sawing-machine being shown as elevated in position for transportation by means of dotted lines. Fig. 2 is a view in plan of the machine in position for operation.

Referring to the drawings, in which like parts are indicated by the same characters of reference throughout both views in which they appear, B designates the framework forming a suitable bed for the support of an engine (designated generally as E) and preferably one of the explosive type in which gasolene furnishes the motive power. The bed B is mounted upon suitable running-gear, as shown, and is preferably covered over with a housing (indicated in dotted lines) in order Serial No. 167,453. (No model.)

to protect the engine from exposure to the weather.

Mounted upon the bed B to the rear of the engine E are apair of vertical brackets 1 2, of which the latter is adjustable longitudinally of the bed. Supported in the brackets 1 2 is a short shaft 3, upon which is pivotally mounted a swinging frame 4, having in its free end a roll 5, adapted for contact with a belt 6, running over the driving-wheel of the engine and extending back to the sawing-machine propcr, presently to be described. The pivoted frame and the pulley are of suflicient width to form an efficient belt-tightener and shifter, and the bracket 2 is made adjustable longitudinally of the frame in order to insure the proper positioning of the roll upon the belt.

At the rear end of the bed 13, which ex- 7 Hinged to the beam 7 by any suitable hinges,

as by the linked eyebolts 11, is a gate 12, formed of heavy timbers, as shown, or of iron, if preferred, and comprising the two longitudinal members 13, two transverse members 14:, and the diagonal brace 15. All the members of the gate when constructed in the manner shown are securely bolted together, so that the gate may be perfectly rigid. At the rear of the gate is attached the frame 16, upon which is supported the saw-mandrel 17. The frame l6 is hinged to the gate 12 in the same way in which the gate is hinged to the transverse beam 7, as shown at 18, thus providing for free movement of both gate and frame in a vertical plane when the bed B is stationary, but preventing any lateral movement of the gate or frame 16. The frame 16 may be of any desired structure and will of course present a sufficiently broad base to furnish a suitable support for the saw-mandrel 17, upon which is mounted a small circular saw 19 and which is provided at one end with a driving-pulley 'drel 1'7.

20, over which passes the belt 6. Any suitable means for feeding the work to the saw may be provided on the frame 16; but as such means forms no part of this invention none is shown or described.

The gate 12 is not supported in alinement with the side members of the framework forming the bed B, but is disalined therefrom, as shown, in order that the pulley 20 on the end of the saw-mandrel 17 may lie directly to the rear of the driving-wheel of the engine E and the strain upon the bed B, due to the tension upon the belt, be brought between the side members of the bed.

When the machine is in operation, the frame 16 will rest upon the ground, as shown in Fig. 1, and the gate 12 will lie substan tially in a horizontal plane, forming a sufficiently rigid connection between the frame 16 and the bed B to permit the saw to be efiectively driven by means of the belt 6. When it is desired to move the machine after the completion of the work at one point, the gate and the frame 16 will be hoisted to the position shown in dotted lines and will be secured there by the engagement of the hook 22, provided on the bed B with the saw-mam All vibration of the gate and the saw-frame when in elevated position is prevented by the contact of the frame with the end of the inclined timber 23, which is rigidly supported at one side of the bed Band which constitutes a stop against which the sawing-machine frame is firmly held by means of the hook 22. As will be readily seen, it requires but an instant to release the hook 22 from engagement with the sawmandrel when the machine has reached the point at which it is desired to operate and to lower the frame 16 into contact with the ground. As soon as the frame 16 rests on the ground the belt 6 may be placed in position upon the pulley 20 and the machine may be set in operation, as no blocking of the frame is necessary. The gate 12 holds the frame 16 in positive relation with the bed B, upon which the engine is mounted, and enables the machine to be operated successfully. When the work at one pointis completed and it is desired to move the machine, the frame 16 may be hoisted into elevated position as quickly as it Was lowered, and the hook 22 may be at once brought into engagement with the saw-mandrel to hold the frame in elevated position.

In a machine constructed as described in the preceding paragraphs the loss of time incident to setting the machine in position for operation and for putting it in condition for transport after the completion of a piece of work are accomplished with -a minimum expenditure of time,and the operator of the machine is enabled to do a correspondingly great amount of work in a given time.

The sawing-machine is especially designed for use in sawing fire-wood and is intended to be moved through the country from point to point as needed; but it is obvious that it may also be used for sawing other materials, if so desired.

As it is often desirable to move the sawingmachine a few feet at a time to bring it nearer to the supply of wood when the Wood from a number of piles close together is being sawed or when the wood from a long pile is being sawed,the frame 16 may be provided with rollers or casters on the bottom thereof,which will hold the base of the frame far enough above the surface of the ground to permit the entire apparatus to be drawn forward a short distance without stopping the operation of the machine. The increase of the weight of the frame by the addition of rollers or casters thereto is comparatively insignificant and is the means of saving considerable timein starting and stopping the machine when the apparatus is to be shifted only a very short distance.

Having thus described the construction and operation of my invention, what I claim as new, and desire to secure by Letters Patent, 1s

1. A portable wood-sawing machine, comprising a suitable motor, a bed upon which said motor is mounted, a gate hinged for vertical movement at the end of said bed, a sawsupporting frame hinged to the gate at the opposite side, and means for securing said gate and said saw-supporting frame in elevated position.

2. A portable wood-sawing machine, comprising a suitable motor, a bed upon which said motor is mounted, a gate hinged at the rear end of said frame for vertical movement and disalined from said bed, a saw-supporting frame hinged to said gate at the opposite side, and means for securing said gate and said saw-supporting frame in elevated position.

3. A portable Wood-sawing machine, comprising a suitable motor, a bed upon which said motor is mounted, a gate hinged at the end of said bed for vertical movement, a sawsupporting frame hinged to said gate at the opposite side, a saw-mandrel rotatably mounted in said frame, a saw mounted upon said mandrel, and a hook upon said bed adapted for engagement with said saw-mandrel to hold said gate and said saw-supportin g frame in elevated position.

v 4. A portable wood-sawing machine, comprising a suitable motor, a bed upon which said motor is mounted, a gate hinged at the rear end of said bed for vertical movement, a saw-supporting frame hinged to said gate at the opposite side, a saw-mandrel rotatably mounted in said frame, a saw on said mandrel, a hook upon said frame adapted to en gage with'said mandrel to hold said gate and said frame in elevated position, and a stop provided on said bed against which said frame is held by said hook when in elevated position.

IIO

5. A portable wood-sawing machine, comprising a suitable motor, a bed upon which said motor is mounted, a pair of side'bars siidably mounted at the outside of said bed,

means for securing said bars in adjusted position, a cross-beam adj nstably secured to said side bars at their rear end, a gate hinged to said cross-beam, a saw-supporting frame hinged to said gate at the opposite side, and

I0 means upon said bed for holding said saw- ELMER ELSWORTH SWARTHOUT.

Witnesses:

FRANCES JONES, FRED J. KEPLER.

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