US2698771A

US2698771A - Carpenter's trestle

Info

Publication number: US2698771A
Application number: US321007A
Authority: US
Inventors: O'rourk Robert
Original assignee: Individual
Current assignee: Individual
Priority date: 1952-11-17
Filing date: 1952-11-17
Publication date: 1955-01-04
Anticipated expiration: 1972-01-04

Description

Jan. 4, 1955 R. OROURK 2,698,771

' CARPENTERS TRESTLE Filed NOV. 17, 1952 Robert O'Rour/r 1N VEN TOR.

Attorn y:

lllid Slates Patent The present invention relates to certain new and useful structural and functional improvements in a carpenters trestle or so-called saw horse and the object of the invention is to provide a knockdown trestle construction in which manufacturers, retailers, and users will find their respective requirements satisfactorily met.

In carrying out a preferred embodiment of the invention, the legs are detachably secured to the cooperating side portions of the beam, the latter part being provided with socket members and the upper ends of the legs being telescopically and removably fitted into the socket members and aptly connected thereto by suitable latch means.

Another object of the invention is to provide a knockdown trestle wherein the beam and legs are of suitable rigid but light weight metal, aluminum for example, and wherein the beam is in the form of a hollow container in which the legs, after they have been detached, may be placed and stored in an out-of-the-way position.

Briefly summarized, the invention has to do with a knockdown carpenters trestle comprising an elongate channel-bar embodying spaced side flanges, socket members secured to said flanges and providing keepers, channel-shaped supporting legs having upper mitered ends abutting said flanges and fitting removably into said keepers, and spring biased detents carried by said upper ends and releasably cooperating with said keepers.

In reducing to practice the preferred embodiment of the invention, the beam takes the form of a channel-bar. The respective ends are closed one by a fixed closure member and the other by way of a latch-retained door. The end and intermediate portions of the otherwise open bottom of the channel are covered by cooperating cleats whereby to thus provide a container in which the legs may be removably placed when not in use.

Other objects, features, and advantages will become more readily apparent from the following description and the accompanying sheet of drawings.

In the drawings wherein like numerals are employed to designate like parts throughout the views:

Figure 1 is a perspective view of a carpenters trestle or saw horse constructed in accordance with the principles of the present invention and showing the manner in which the same is set up and used;

Figure 2 is a perspective view of the beam or head which is herein especially constructed to accomplish the ends above referred to;

Figure 3 is a view in section and elevation taken on the vertical line 33 of Figure 1 looking in the direction of the arrows;

Figure 4 is a bottom plan view on a smaller scale showing the manner in which the legs, after they have been detached, or stored removably in the container portion of the channel;

Figure 5 is an enlarged fragmentary sectional and elevational view on the approximate vertical line 5--5 of Figure 2 looking in the direction of the arrows; and

Figure 6 is a similar view of the opposite end taken on the vertical line 66 of Figure 2 looking in the direction of the arrows.

Referring now to the drawings by reference numerals and accompanying lead lines, the main part is denoted by the numeral 8 and this is sometimes referred to as a head, a beam or body member and so on. Because of the specific nature of the member here, it is to be specifically referred to as a rigid light weight metal channel-bar. It includes a web 10 and spaced parallel side flanges l2 and 14 having tapered socket members 16--16 joined 2,698,771 Patented Jan. 4, 1955 exteriorly to the

side flanges

12 and 14 in paired longitudinally spaced relation as shown in the drawings. The web 10 may be provided, if desired, at longitudinally spaced points with holes 18 for venting and draining purposes. As brought out in Figure 6, the right hand end of the channel, which would otherwise be open, is closed in by a fixedly mounted end plate 20. At the same end there is a cooperating cleat 22 which spans the bottom and forms a sort of an end pocket. There is a similar cleat 24 at the left hand end as shown in Figure 5 and cooperating therewith is a hinged member which may be described as an openable and closable door 26, the same being hinged in place as at 28. A suitable spring retained latch is provided at 30 to normally keep the door closed. Therefore there are pockets at both ends of the chest. Further there is a cooperating cleat 32 fixed across the open portion of the center of the channel and this cooperates with the respective pockets in providing a container in a manner to be further described. Incidentally, the numeral 34 denotes a suitable flexible handle for carrying purposes.

The four legs used are in the form of channel-bars and the legs of one pair are denoted by the numerals 3636 and those of the other pair by the numerals 3838. These legs are of a length that they are capable of being stored in a compact, convenient, and out-of-the-way position in the aforementioned container in the manner shown in Figure 4. It may be assumed that the legs are approximately two inches in cross-section or width while the width of the channel in which they are to be stored is approximately four and one-half inches or so. Each leg is of a length approximately one-half the overall length of the channel. This means that the legs can be placed along side of each other in pairs and are fitted into the respective pockets and are saddled in place by the center cleat 32. The latch held door at the left hand end provides a convenient means for inserting and removing the legs as is obvious. The upper end of each leg is mitered or beveled as at 40 so as to bear properly and firmly against the cooperating flange. Each leg is provided with a detent pin 42 to fit into hole means 44 provided in the keeper socket. The detent pin is mounted on a suitable leaf spring 46 anchored in place in the manner shown best in Figure 3. This means therefore, that the upper mitered ends of the legs are slipped into the keeper sockets and then fastened in place by the spring-pressed detents or pins in the manner best shown in Figure 3. As before covered, when the legs are detached from the channel member, they may be properly paired and stored away in the container portion of the channel.

The manner in which saw horses and trestles are used is common knowledge to those familiar with trestles and the way in which carpenters or painters use them for various jobs. As a matter of fact, trestles having detachable legs are also admittedly old. In the circumstances, it is believed that a consideration of the specification and claims in conjunction with the drawings will glarijfy the significance of the improvements herein set ort From the foregoing, the construction and operation of the device will be readily understood and further explanation is believed to be unnecessary. However, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the invention to the exact construction shown and described, and accordingly all suitable modifications and equivalents may be resorted to, falling within the scope of the appended claim.

What is claimed as new is as follows:

A portable knockdown carpenters trestle comprising an elongate rigid channel bar embodying a web having ventilating holes therein and including spaced parallel flanges at right angles to said web, oblique-angled socket members, said socket members being arranged in opposed pairs and each pair longitudinally spaced from the other pair with the respective pairs adjacent the respective transverse ends of said channel bar, said socket members cooperating with the exterior surfaces of the flanges and constituting receivers, said channel bar having a fixed end closure at one end of the channel, a cooperating cleat fixed to the flanges and spanning the open side of the channel and cooperating with said fixed end closure and" defining a pocket-like receiver, a plurality of additional cleats fixed to the bottom surfaces of the flanges and spanning the space between the flanges and cooperating 5 References Cited in the file of this patent UNITED STATES PATENTS Loftin Dec. 31, Oetzel Aug. 28,

Anderson July 15,

Sivey June 7,

FOREIGN PATENTS Germany Dec. 29,

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