|Publication number||US2823078 A|
|Publication date||Feb 11, 1958|
|Filing date||Apr 23, 1956|
|Priority date||Apr 23, 1956|
|Publication number||US 2823078 A, US 2823078A, US-A-2823078, US2823078 A, US2823078A|
|Inventors||Keema Alexander W|
|Original Assignee||Keema Alexander W|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (8), Referenced by (3), Classifications (6)|
|External Links: USPTO, USPTO Assignment, Espacenet|
A. W. KEEMA Feb. 11, 1958 SAWHORSE 2 Sheets-Sheet 1 Filed April 25, 1956 6 l? INVENTOR. 1; J/eIowa er 14/ Keema ATTORNEYS.
2 my Q Feb. 11, 1958 A. w. KEEMA 2,823,078
' SAWHORSE Filed April 23. 1956 2 Sheets-Sheet 2 IN VEN TOR.
04/91 under Z'fl "Af eema ATTORNEYS;
United States Patent p SAWHORSE Alexander W. Keema, Wickford, R. I.
Application April 23, 1956, Serial No. 579,871
1 Claim. (Cl. 304--) .This invention relates to a collapsible sawhorse.
An object of the invention is to provide an all metal sawhorse which will be rigid, strong, light weight, and durable in use.
Another object of the invention is to provide a construction which may be condensed into a small package for storage or transportation.
Another object of the invention is to provide a sawhorse constructed so as to form when dismantled a container for certain separable parts of the sawhorse.
Another object of the invention is to provide a sawhorse constructed of combined channel and angle shaped parts.
With these and other objects in view, the invention consists of certain novel features of construction as will be more fully described and particularly pointed out in the appended claim.
In the accompanying drawing:
Figure 1 is a perspective view of a sawhorse illustrating my improved construction;
Figure 2 is an end elevational view on an enlarged scale of the sawhorse looking in the direction of the arrows on line 22 at the left of Figure 1;
Figure 3 is a sectional view taken substantially along line 3-3 of Figure 1 also drawn on a larger scale;
Figure 4 is a sectional view taken substantially along line 4--4 of Figure 2;
Figure 5 is a sectional view similar to Figure 4 but showing certain parts in different relation;
Figure 6 is a cross section of the sawhorse along line 6-6 of Figure 5;
Figure 7 is a section along line 77 of Figure 2;
Figure 8 is a section along line 88 of Figure 2;
Figure 9 is a plan view of the sawhorse in a dismantled relation or in a small package form;
Figure 10 is a perspective view of a pair of leg extensions shown in a nested relation; and
Figure 11 is a sectional View taken substantially along line 1111 of Figure 9.
Referring to Figures 1, 2, and 3, the sawhorse 10 is shown in the assembled relation and comprises a work supporting member or body 11 which is supported on pairs of spaced legs 12. The legs of each pair are angularly disposed relative to each other and with their brace form an A-shaped support, as seen in the above figures. The body 11 is generally inverted U-shaped or channel in cross section, which provides side walls 13, 13' which are joined by a flat bridge, web, or top wall 14. The walls 13, 13 depend from the wall 14 at the angle of the slope of legs 12. The body 11 may be made of any suitable material but preferably is made of aluminum material or alloys thereof so as to provide for the desired lightness as well as the required strength and durability in structure.
Each leg 12 is the same, and only one need be described. Each leg, which preferably is made of a material similar to the body 11, comp-rises two similar angle shaped members 15 and 16 which are positioned with their sides abutting each other in nested relation 2,823,078 Patented Feb. 11, 1958 (see Figure 8); The inner members 15 have their sides 15 (see Figure 3) engaging the inner side of walls 13, 13, .and each is pivotally secured to its side wall by means of a bolt and nut fastening 17. An angle shaped bracket 18 has the side 19 thereof engaging the inner side of wall 14 and is fastened thereto by means of screw 20 (see Figures 3 and 4). The other side 19' of bracket 18 extends from the wall 14 on an outward slant at a slight angle from the vertical and provides an angular abutment against which each side 15" of inner members 15 engage and are secured thereto by bolts and nuts 21.
Thus, the component 15 of each leg 12 depends from the body 11 on an outward slant, both crosswise and lengthwise of body 11. The leg parts 15 are each of a length from their pivot about one half the distance between their pivots 17 so they may be folded as shown in Figure 9.
Each side of the inner member 15 is provided with a plurality of equallyspaced openings 22 and the outer member 16 is similarly provided with spaced openings 23 which are adapted to be positioned in register with the openings 22 so as to receive fastening bolts and nuts 25 to firmly detachably secure the members together in adjusted position. The openings 22 and 23 may be spaced apart as for example two inches so that the leg 12 may be increased or decreased in multiples of two inches. The lower end of each leg part 16 is provided with a flat foot portion 26 which is apertured as at 27 to receive a fastening screw when it is desired to secure the assembled sawhorse to a support on which it may rest. Each pair of legs is additionally reinforced by a lateral cross member or brace 28 which may be secured in position by the screw fastening 25, which also passes through registering openings 22, 23 in the inner and outer leg members 15 and 16.
From the above it will be apparent that the sawhorse in the assembled relation has each part tightly secured to the other so as to provide a rigid structure free of relatively moving elements. Thus, in the assembled relation the sawhorse retains all the desirable rigidity of a p'ermanently built sawhorse.
When the sawhorse above described is to be collapsed in condition for transportation or storage, the braces 28 may first be removed, which will permit detaching the leg parts 16 from the leg parts 15. The leg parts 16 may now be positioned together in nested relation as shown in Figure 10. With the sawhorse in inverted position, the leg parts 16 and braces 28 may be positioned within the channel 11. The leg parts 15 may now be freed of the abutments or brackets by the removal of bolts and nuts 21. Then by loosening nuts of fastening 17, the parts 15 may be swung inwardly into the body 11, as shown in Figures 5, 6, and 11, the end walls 15" thereof providing a closure for the open side of channel 11. The bolts, nuts, and screws may be placed in a bag 30 and the bag positioned within the channel prior to closure. The nuts of fastening 17 may thereafter be tightened to secure the leg parts in the collapsed position, as seen in Figures 9 and 11.
In some instances it may be desirable to provide additional locking means to retain the leg parts in the collapsed position within the channel 11. To this end (see Figure 6) a detent or depression 31 may be formed in the walls 13 to extend inwardly thereof at a location to be in register with certain of the said openings 22 to engage the edges thereof.
It will now be apparent that I have disclosed a sawhorse of light, rigid construction free of any wiggling action between parts. It will likewise be apparent that the structure is such that when in the collapsed relation, the channel 11, the leg parts 15, and the brackets 18 form a closed container for the storage of the other parts of the sawhorse.
A sawhorse comprising an elongated work supporting body of generally channel shape in cross section providing a top wall and divergent side walls depending therefrom and of the same piece of material as'the top Wall, four legs of L shape cross section supporting said body with one leg at each of the opposite ends of the side Walls, each leg having one side of its L cross section parallel and contacting the inner surface of a side wall and a pivot extending through said contacting portions and serving as the only pivotal support of such leg, the other side of the L cross section of each leg extending inwardly from the side wall and substantially closing the space between side walls when the leg .is in .a position about its pivot parallel to the top wall, the two of the legs on the same side wall being ofa combined length when at right angles to the top wall greater than the distance between their pivots and both being adjustable in length so that when shortened their combined lengths will be less than the distance between their pivotal connection to the same side wall, said four legs when in position parallel to the top wall of the body closing the space between side wall sufficiently 'to contain and assist in preventing loss of parts contained therein, and brackets secured to the under side of the top wall adjacent the pivot of the legs to the side Walls and extending downwardly from the top wall and inclined away fromeach other and engaged in face to face contact by said legs when in working posit-ion and means to secure the legs to said brackets.
References Cited in the file of this patent UNITED STATES PATENTS 933,650 Kramer Sept. 7, 1909 1,103,699 South July 14, 1914 1,445,395 Harvey Feb. 13, 1923 1,680,065 Proctor Aug. 7, 1928 1,778,566 Pitner Oct. 14, 1930 2,136,420 Edwards Nov. 15, 1938 2,272,957 Walp Feb. 10, 1942 2,473,342 Larson June 14, 1949
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US933650 *||Sep 7, 1909||Flattner Implement Company||Adjustable and collapsible trestle.|
|US1103699 *||May 31, 1913||Jul 14, 1914||William H South||Carpenter's trestle.|
|US1445395 *||Sep 8, 1921||Feb 13, 1923||harvey|
|US1680065 *||Feb 10, 1927||Aug 7, 1928||Commercial Shearing||Foldable support|
|US1778566 *||Feb 13, 1928||Oct 14, 1930||Trav Ler Mfg Corp||Trestle|
|US2136420 *||Nov 27, 1936||Nov 15, 1938||Charles L Edwards||Collapsible trestle|
|US2272957 *||Jul 10, 1941||Feb 10, 1942||Walp Fred E||Scaffold|
|US2473342 *||May 17, 1946||Jun 14, 1949||Larson Charles O||Folding sawhorse|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US4776545 *||Aug 5, 1987||Oct 11, 1988||Ryobi Ltd.||Bench stand|
|US7861752 *||Jan 18, 2007||Jan 4, 2011||Leaf Michael A||Saw guide system|
|US20100006734 *||Jul 9, 2008||Jan 14, 2010||Connell Will D||Material support apparatus|
|U.S. Classification||182/151, 182/182.5|
|International Classification||B25H1/00, B25H1/06|