US1462707A

US1462707A - Sawhorse

Info

Publication number: US1462707A
Application number: US567766A
Authority: US
Inventors: James M Lawlor
Original assignee: Individual
Current assignee: Individual
Priority date: 1922-06-12
Filing date: 1922-06-12
Publication date: 1923-07-24
Anticipated expiration: 1940-07-24

Description

Patented July 24, 1923.

eaver earner reins.

JAMES M. LAWLOR, OF TOPEKA', KANSAS.

SAWHORSE.

Application filed June 12, 1922. Serial No. 567,766.

To all whom it may concern Be it known that I, JAMns M. LAwLoR, a citizen of the United States, residing at T0- peka, inthe county of Shawnee and State of Kansas, have invented certain new and'useful Improvements in Sawhorses; and I do 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, ref- "which may be conveniently assembled and disassembled, the latter being important when it is desired to knock-down the structure for transportation, storing, etc. i

The saw horse can be constructed of standard lumber and the legs can betenoned into mortises orslots in the top or ridge piece and securely fastened therein by a turnbuckle consisting of twoheaded bolts bearing 011 opposite sides of complementary legs and connected'by athreaded sleeve so that thelegs canbe drawn together to force them at angles into slots inthe top ori'idge piece-of the saw horse. i

The novelconstruction of the invention will be apparent by reference tothe following description in connection with the accompanying drawings, in which Fig: 1 is a perspective View of a saw horse constructed in accordance with my invention. Fig. 2 is a fragmentary, longitudinal view through a part of the top or ridge piece, part of one of the legs being shown in elevation, and

i Fig. 3 is an end viewof the saw horse. (The top or ridge piece 1 may consist of standard lumber commercially known as a 2 4, that is, it may consist of a beamtwo inches thick and four inches wide. Near the respective ends ofthe beam 1 are pairs of

slots

2 and 3 at one end and 1 and 5 at the other. The side wallsof the slots are transversely inclined; that is, the widest distance between the slots is at the bottom of the beam 1 and the narrowest distance isat the top.

The saw horse is provided with four

legs

6, 7, 8 and 9, provided with tongues or

tenons

10, 11, 12 and 18 respectively. The tenons have less cross sectional area than their legs and they are so cut that shoulders l lare formed for eachvleg which will abut against the under face of the member 1. The legs may consist of standard lumber commercially known as 1 x is, that is, they may be one inch thick and four inches wide. The legs are arranged in pairs,6 and 7 cOnstituting one pair and 8 and 9 another pair, and between the respective pairs of legs are 1 X 2 spacing struts 15 and 16, which have at their respective ends tenons 17 and 18 adapted to pass through openings in the legs, as

sleeve 23. The bolts are oppositely threaded to receive opposite threads in the ends of the sleeve 23, the sleeve 23be1ng provided with a hole 2% ror'tne insertion of a pin.

nail or nail set whereby the turnbuckle can I be rotated.

The bolts have

angular offset portions

25 and 26 which are received in openings in the legs. The

inclined ofiisetportions

25 and 26 position the heads of the bolts at angles to a true horizontal line so that the heads of the bolts will be parallel with the inclined sides of the legs. Therefore, when the washers 25' areplaced on the bolts, they will lie flat against the inclined sides of the legs while the threaded portions of the bolts will lie in true horizontal planes and in axial alignment so that when the sleeve is turned, the threaded ends of the bolts can be drawn together, tending to draw the unper ends of the legs together and thereby "force the tenonsinto the inclinedslots in the ends of the top piece or ridge member 1 so that they will be held in clamping position. The tighter the sleeve 23 is screwed, the tighter will, be the engagement between the

tenons

10, 11, 12 and 13 and their complementary .will be clearly seen by reference to the draw- I The spreading struts 15 and 16 will constitute fulcrums for the legs SO that when the sleeve is turned to draw the bolts together, there will be a slight teetering action of the legs against the ends of the struts 15 and 16. The struts also Serve for spacing the lower ends of complementary legs apart.

The struts have an additional advantage in that they constitute shelf-supporting brackets because if desired, a shelf 26 may rest upon the struts l5 and 1 6 to support artiroles to be used at the time the saw horse is employed.

Inasmuch as it is the prime purpose of my invention to construct a saw horse at a minimum cost, I recommend the use of wood, as above described, because the 2 X 4s, 1 X as and 1 {x 2s are kept in stock in any lumber yard. It is apparent, however,- thatthe invention might be madeot metal although at mayflthen' be withdrawn, the struts can be removed, and the legs laid parallel one upon the other and then parallel with the ridge piece 1 so that a very small bundle can be made of the knocked down parts, thereby facilitating transportation and storage. v H

The olfse't or inclined portions of the bolts is an important feature of the invention and they not only insure that the fac- 1 ing members, that is, the washers or heads of the bolts will lie flush against the inclined sides of the legs but they also will prevent the bolts from turningin the holes in the legs when the sleeves are turned to draw the bolts together.

From the foregoing it will be apparent that the saw horse can be inexpensively and conveniently constructed, that the parts will be rigidly held together after they have been properly set up, and that should the occasion demand, the parts may be'readily disassociated for transportation and stor- What I claim and desire to secure by Letters Patent is:

1. .A saw horse comprising an elongated, horizontal top member having vertical slots therein inclined toward the longitudinal center of the top'member, legs at the respective, ends of the top member having'tenons received in said slots, and a turn buckle between each pair of logs, the turn buckle comprisinginwardly extending bolts projecting through complementary legs and provided with aligning threaded ends, the headed portions of the bolts passing through lateral holes in the legs at angles to the axes of the threaded portions and a threaded sleeve for each pairot bolts adapted to be turned to draw the threaded ends of the bolts together to force the tenons into the inclined slots in the ends of the top member.

2. A saw horse comprising an elongated horizontal top member having vertical slots therein inclined toward the longitudinal center of the top member, legsa't the respectiveends' 0t vthe-top .member having tenons received in said slots, a turnbuckle between each pair of legs, the turnbuckle comprising inwardly extending bolts projecting through complementary legs and provided with aligning threaded ends, the headed ,portionsof the bolts passing through lateral holes in the legs at angles to the axes of the threaded portions and a threaded sleeve t'oreach pairof bolts adapt ed to beturned to draw the threaded ends of the bolts together to ,iorce the tenons into the inclined slots in the ends of the top member, and a spreading strut betweeneach pairot legs and below the turnbuckle.

3. A sawhorse comprising a horizontal top beam having pairs of vertical slots near 1ts respective ends, the respective slots of each pair being inclined toward one an other, pairs of legs having tenons engaging said slots, and adjustable connectors engaging the legs near their upper portions to drawthem together so as to force the tenons into the slots. a 1 v 1 l. A saw horse comprising a horizontal top beam having pairs of vertical slots near its respective ends, the slots of each pair being inclined one toward the other, pairs of legs having tenons engaging said slots, adjustable connectors engaging the legs near their upper portions to draw them together so as to force the tenons into the slots, and spreaders between the pairs of legs near their lower ends. y

5. A saw horse comprisinga beam having pairs of slots near its respective ends, pairs of leg having tenons engaging said slots, turnbuckles connecting the upper portions of the legs, each turnbuckle-consisting of bolts passing through complementary legs, threaded sleeves connecting them, and cooperative means between theibolts and the legs for preventing turning of the bolts with respect to .thelegs, said co-operative means comprising inclined portions on the bolts and the walls of the openings through which the bolts project,

In testimony whereof I aifiir my signa-