US3053290A

US3053290A - Sawbuck for chain saws

Info

Publication number: US3053290A
Authority: US
Inventors: John A Fitzgerald
Original assignee: Individual
Current assignee: Individual
Priority date: 1960-06-10
Filing date: 1960-06-10
Publication date: 1962-09-11
Anticipated expiration: 1979-09-11

Description

Sept. 11, 1962 J. A. FITZGERALD SAWBUCK FOR CHAIN SAWS 2 Sheets-Sheet 1 Filed June 10, 1960 n uon i n n m. A I u n n u n u mz w w 4 /z a 5 Q 2 6 3 A z MM 7/ 6 /Z l 7 W W 7 m l w 3 FIG. 2.

7 INVENTOR.

JOH/V 4. F/TZGEEflLD,

P 1962 J. A. FlTZGERALD 3,053,290

SAWBUCK FOR CHAIN SAWS Filed June 10, 1960 2 Sheets-Sheet 2 FIG. 4

FIG. 5.

FIG. 6.

INVENTOR. JOHN ,4. 1 772652440,

ATTOIQ/I/EYS.

Patented Sept. 11, 1962 ice 3,053,290 SAWBUCK FOR CHAIN SAWS John A. Fitzgerald, P.0. Box 361, Monroe, NY. Filed June 10, 1960, Ser. No. 35,236 3 Claims. (Cl. 143-32) This invention relates to saw horses, and more particularly to a saw horse or bench especially adapted for use with a portable chain saw.

A main object of the invention is to provide a novel and improved saw horse for use with a motor-driven portable chainsaw to make the chain saw adapted for cutting up relatively small pieces of wood, the improved saw horse being simple in construction, being relatively compact in size, and providing a firm and reliable support for a chain saw and for pieces of wood to be cut up thereby.

A further object of the invention is to provide an improved saw horse for use with a motor-driven chain saw, the saw horse being inexpensive to fabricate, being sturdy in construction, and providing a secure and reliable support for the chain saw and for pieces of wood to be cut thereby, enabling the wood to be cut rapidly and with a minimum amount of human effort, as well as with minimum risk of injury to the operator.

Further objects and advantages of the invention will become apparent from the following description and claims, and from the accompanying drawings, wherein:

FIGURE 1 is a top plan view of an improved saw horse constructed in accordance with the present invention.

FIGURE 2 is a side elevational view of the saw horse of FIGURE 1, with a motor-driven chain saw mounted thereon.

FIGURE 3 is an end elevational view of the saw horse of FIGURES 1 and 2.

FIGURE 4 is a vertical cross sectional view taken substantially on the line 4-4 of FIGURE 1.

FIGURE 5 is a fragmentary side elevational view, partly in cross section, of the top portion of the saw horse of FIGURES 1 to 4, shown with an attachment mounted thereon for adapting the saw horse for use with smaller pieces of wood.

FIGURE 6 is a fragmentary end elevational view of the saw horse and adapter of FIGURE 5.

FIGURE 7 is a perspective view of the adapter employed in FIGURES 5 and 6.

Referring to the drawings, and more particularly to FIGURES 1 to 4, 11 generally designates an improved saw horse for use with a conventional motor-driven chain saw 12, in accordance with the present invention. The saw horse 11 comprises a pair of

horizontal top bars

13, 13 which are substantial length and which are also of substantial vertical height, the top bars being arranged parallel to each other so as to define a slot or space 14 therebetween of sufiicient width to receive the chain supporting bracket 15 and cutting chain 16 of the motordriven chain saw 12.

Respective downwardly and outwardly extending legs are secured to the end portions of the top bar members, a pair of

legs

17, 17 and 17, 17 being provided at each end of the saw horse.

Respective cross bars

18 and 18 are secured to the bottom edges of the

top bar members

13, 13 and to the outwardly facing edges of the

respective legs

17, 17 and 17 17', as is clearly shown in FIG- URE 2, whereby the

top bar members

13, 13 are rigidly connected in spaced parallel relationship.

The top edges of the

bar members

13, 13 are formed with notches 19 at their rear portions shaped to receive a generally rectangular supporting board 20, the notches being inclined downwardly and rearwardly, as shown in FIGURE 2, whereby the board 20 will be supported there-, by in a downwardly and rearwardly inclined position.

The board 20 is hingedly connected at its front edge to the top edges of the

bar members

13, 13, as by means of

respective hinges

21, 21, whose hinge axes are transversely aligned, so that the supporting board 20 is rotatable on a transverse horizontal axis. The chain saw 12, which is of conventional construction, is mounted on the supporting board 20 in a position such that the bracket 15 and cutting chain 16 are rotatable downwardly through the slot 14 responsive to the upward rotation of the supporting board 20, for example, to the dotted view position thereof shown in FIGURE 4.

The top edges of the bar members 13 are formed a substantial distance forwardly from the supporting board 20 with the transversely aligned, generally

triangular guide notches

22, 22, the bottom surfaces of the notches being inclined downwardly and rearwardly, namely, toward the board 20, and being adapted to support a piece of wood to be cut, for example, the piece of wood 23 shown in dot-ted view in FIGURE 2. Thus, the notches 22 support the workpiece 23 in a position transverse to the

bar mmebers

13, 13, with the portion thereof to be cut located directly over the guide slot 14. To cut the board 23, it is therefore merely necessary to rotate the chain saw 12, from its normal position, shown in full line view in FIGURE 2, to the dotted view position thereof, shown in FIGURE 4, which is easily accomplished by merely elevating the rear handle 24 or analogous gripping portion ordinarily provided on a portable chain saw of this type.

Referring now to FIGURES 5, 6 and 7, and adapted 25 may be provided for use where smaller workpieces are to be cut. The attachment or adapted 25 comprises a generally U-shaped main body 26 formed with the

parallel side arms

27, 27, spaced apart by the same distance as the distance between the

top bar members

13, 13, the

side arms

27, 27 being provided with depending triangular lugs 28 adapted to fit into the respective triangular notches 22. The bight portion of the body 26 is formed with a depending guide lug 29 which is receivable between the forward portions of the

bar members

13, 13, immediately adjacent the

notches

22, 22, and said bight portion is likewise formed with an extension lug 30 receivable beyond and above the forward portions of the

bar members

13, 13. The

side arms

27, 27 are formed at their ends with

upstanding shoulder members

31, 31 defining stop shoulders corresponding to the

vertical shoulder elements

32, 32 of the triangular notches 22. The

end portions

33, 33 of the

side arms

27, 27 are provided with depending

guide pins

34, 34 which are engageable in

guide recesses

35, 35 formed in the top portions of the

bar members

13, 13 rearwardly adjacent the

notches

22, 22, as is clearly shown in FIGURES 1 and 5.

As shown in FIGURES 5, 6 and 7, the attachment 25 may 'be readily mounted on the

top bar members

13, 13 by merely engaging the depending pins 34 in the recesses 35 with the depending triangular lugs 28 engaged in the notches 22 and with the depending lug 29 received between the forward end portions of the top bar members 13.

It will be noted that the supporting plate or board 20 is supportingly engageable on the top ends of the rear supporting legs 17' so that the weight of the motor portion of the chain saw 12 is transmitted directly to the supporting legs 17 through the hinged plate member 20. This provides a firm and reliable support for the chain saw, which is of substantial weight, so that there will be a minimum tendency of the saw to vibrate or shake and so that the vibration of the chain saw will not tend to loosen the connections between the cross bar 18', the legs 17' and the top bar members 13.

While a specific embodiment of an improved saw horse for use with a motor driven chain saw has been disclosed in the foregoing description, it will be understood that various modifications within the spirit of the invention may occur to those skilled in the art. Therefore, it is intended that no limitations be placed on the invention except as defined by the scope of the appended claims.

What is claimed is:

1. A saw horse for use with a motor driven chain saw comprising a pair of horizontal top bar members, means rigidly connecting said top bar members in spaced parallel relation to define a guide slot therebetween adapted to receive the cutting chain of the chain saw, respective pairs of supporting legs secured to the opposite end portions of said bar members, the top edges of said top bar members being formed at their rear portions with downwardly .and rearwardly inclined transversely aligned notches, and

a supporting plate hinged at its front edge to the top edges of said bar members at the front ends of said notches for rotation on a transverse horizontal axis, said supporting plate being normally supportably received in said notches and being adapted to supportingly receive the motor portion of the chain saw for tilting movement of said supporting plate and chain saw as a unit about said transverse axis whereby the saw can cut a workpiece laid across the front portions of the bar member and return to a normal inoperative position with the board supported in a downwardly and rearwardly inclined position and the chain saw blade raised above its working position.

2. A saw horse for use with a portable motor driven chain saw comprising a pair of horizontal top bar members, means rigidly connecting said top bar members in spaced parallel relation to define a guide slot therebetween adapted to receive the cutting chain of the chain saw, respective pairs of supporting legs secured to the opposite end portions of said bar members, the top edges of said top bar members being formed at their rear portions with downwardly and rearwardly inclined transversely aligned notches, and a supporting plate hinged at its front edge to the top edges of said bar members at the front ends of said notches for rotation on a transverse axis, said supporting plate being normally supportably receivable in said notches and being adapted to supportingly receive the motor portion of the chain saw for tilting movement of said supporting plate and chain saw as a unit about said transverse axis whereby the saw can cut a workpiece laid across the front portions of the bar member and return to a normal inoperative position with the board supported in a downwardly and rearwardly inclined position and the chain saw blade raised above its working position, the top edges of the bar members being formed with transversely aligned work piece guide notches spaced forwardly from the hinged connection of said supporting plate.

3. A saw horse for use with a portable motor driven chain saw comprising a pair of horizontal top bar members of substantial vertical height, respective cross bars disposed beneath the end portions of said top bar members, respective downwardly and outwardly extending legs secured to the end portions of the top bar members and the end portions of the cross bars rigidly connecting said top bar members in spaced parallel relation to define a guide slot therebetween adapted to receive the cutting chain of the chain saw, the top edges of said top bar members being formed at their rear portions with downwardly and rearwardly inclined transversely aligned notches, and a supporting plate hinged at its front edge to the top edges of said bar members at the front ends of said notches for rotation on a transverse horizontal axis, the top ends of the legs at the rear portions of said bar members being substantially flush with the downwardly and rearwardly inclined notches and being supportingly engageable with the plate along with said notches, said supporting plate being normally supportably receivable in said notches and being adapted to supportingly receive the motor portion of the chain saw for tilting movement of said supporting plate and chain saw as a unit about said transverse axis whereby the saw can cut a workpiece laid across the front portions of the bar member and return to a normal inoperative position with the board supported in a downwardly and rearwardly inclined position and the chain saw blade raised above its working position, the top edges of the bar members being formed with transversely aligned work piece guide notches spaced forwardly from the hinged connection of said supporting plate.

References Cited in the file of this patent UNITED STATES PATENTS 1,745,699 Kleeb et al Feb. 4, 1930 2,020,222 Tautz Nov. 5, 1935 2,064,017 Leschen Dec. 15, 1936 2,247,183 Bour June 24, 1941 2,541,508 Fleming Feb. 13, 1951 2,683,475 Miller July 13, 1954 2,851,068 Goodlet Sept. 9, 1958 FOREIGN PATENTS 243,406 Switzerland Dec. 16, 1946