Patent Publication Number: US-2011056768-A1

Title: Clydesdale saw horse

Description:
CLAIM OF PRIORITY 
     This patent application claims priority under 35 USC 119(e)(1) from U.S. Provisional Patent Application Ser. No. 61/275,105 filed Aug. 25, 2009, of common inventorship herewith entitled, “Clydesdale Saw Horse.” 
    
    
     FIELD OF THE INVENTION 
     The present invention pertains to the field of construction equipment, and more specifically to the field of saw horses, and even more specifically to the field of collapsible saw horses. 
     BACKGROUND OF THE INVENTION 
     The prior art has put forth several designs for collapsible saw horses. Among these are: 
     U.S. Pat. No. 4,926,966 to Alban M. Boudreau describes a folding saw horse comprised of a back and two leg pairs, wherein the leg pairs are held in brackets that fix the legs in an inverted V and swing at the apexes of the V. 
     U.S. Pat. No. 7,172,053 to Stefano Slavich describes a knockdown saw horse comprising first and second beam sections which are pivotally connected to form a storage housing and leg assemblies pivotally connected thereto. 
     U.S. Pat. No. 7,185,738 to Jerry Clepper describes a modular saw horse comprising hinged sections to collapse, stack and mount for storage and transport. 
     None of these prior art references describe the present invention. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a top perspective view of the saw horse of the present invention in the upright position. 
         FIG. 2  is a close up of the legs of the saw horse of the present invention. 
         FIG. 3  is a top perspective view of the saw horse of the present invention in the collapsed position. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     For many projects, the first item of business for the carpenter is building a pair of sawhorses. A pair of sawhorses is indispensable for everything from cutting plywood and framing members to use as a table for laying out plans and sketches, and building a pair of saw horses is a precise, time-consuming job. 
     A sawhorse is a simple apparatus comprising a horizontal top rail supported by two A-frame, cross-braced legs. A pair of sawhorses is stable and sturdy. The trouble with wooden sawhorses is that they are heavy and bulky, don&#39;t stack very well, and generally, at the conclusion of the job, get left behind by the work crew. 
     Recognizing the time, cost, and waste involved in the on-site building of wooden sawhorses, the present invention, hereinafter referred to as the Clydesdale Saw Horse, was developed. 
     Simply stated, the Clydesdale Saw Horse is a metal, height-adjustable, folding sawhorse, easily assembled in moments, strong enough for heavy loads, and, when no longer needed, easily collapsed into a compact, flat package for storage or transport. Manufactured by the Fabricated Metal Products industry, the Clydesdale Saw Horse is fabricated of a lightweight steel allow or a fairly heavy gauge aluminum alloy, and is manufactured and sold as a pair. 
     When assembled for use, the Clydesdale Saw Horse resembles, in overall appearance, a standard sawhorse, with a flat horizontal top rail and a set of A-frame legs at each end, each pair of legs connected by a hinged, locking metal cross-brace. The top rail, which measures about 38 inches in length by about 4 inches in width, flares outward slightly at each end, with corner-set notches to receive and lock in the tops of the four legs. The legs themselves are cut from lengths of half-squared metal tubing, such that the flat side is presented outwardly, and the concave or squared surface is presented to the interior. The legs are fitted with precut slots, set at intervals along their length. The height of the legs is adjustable in the following manner: fitted to the inside of each leg is a sliding, inset length of half-squared metal tubing, identical to the outer leg but of slightly smaller diameter. These inset lengths can thus be moved up or down, within the outer leg. The inset lengths are also fitted with precut slots. The slot in the moveable inset piece will align with a given slot in the outer leg, and can be locked into that position with a carriage bolt and wing nut. Thus, the effective leg-length, and therefore the height, of the Clydesdale Saw Horse varies from about 25 to 34 inches, depending on the positioning of the sliding inset leg extenders. The legs themselves, when spread for use, are locked into the spread position by tightening a bolt which connects them to the top rail of the horse. This bolt runs through the top of both legs, and therefore forms a pivot point which, when the bolt is loosened, allows the legs to be folded in together. When spread, as noted, the legs are connected by a hinged, locking, strap-type brace. This cross-brace can also be locked when the legs are fully extended and spread, thus ensuring full stability of the horse. The Clydesdale Saw Horse is a metal sawhorse the height of which is adjustable, with legs that lock in the spread position and fold together when unlocked. The collapsible nature of the saw horse of the present invention is that the legs not only fold together, they also swing inward, along the plane of the top horizontal rail. When the unit is collapsed, it literally folds down into a virtually flat package, the length (38 inches) and width (4 inches) of the top horizontal rail itself. In an alternative embodiment, a set of suitcase-type carrying handles, which are set on the side of the top horizontal rail of each horse are included. 
     The Clydesdale Saw Horse, a height-adjustable metal sawhorse that folds flat for storage and transport, presents a number of distinct benefits and advantages. Foremost, the Clydesdale Saw Horse saves carpenters the necessity of building a set of wooden sawhorses at the site of each new job. With the Clydesdale Saw Horse, a worker simply removes the stowed horses from the truck, pulls the legs down and out, adjusts the leg-height, tightens the nuts which lock the horse into working order, and sets to work. Likewise, when the day&#39;s work is finished, a couple of turns to loosen the locking nuts, and the Clydesdale Saw Horse folds up as easily as a card-table. And then, because it folds up into such a compact unit, the pair of Clydesdale Saw Horses can easily be carried and stowed away in the work truck. Lightweight and manufactured of high-strength alloys, the Clydesdale Saw Horse provides heavy-duty, dependable service on a multiplicity of jobs. In an embodiment, the metal is sealed with a rustproof paint or powder coating, rendering the Clydesdale Saw Horse impervious to moisture and weather. In the way of maintenance, all that the Clydesdale Saw Horse requires is an occasional wipe-down with a damp cloth, and the occasional drop of oil on the moving parts. 
     A sturdy, height-adjustable metal saw horse that collapses into a virtually flat package for transport and storage, the Clydesdale Saw Horse provides a stable base for carpentry and other tasks, yet proves far more convenient to carry and store than other, conventional saw horses. Built of heavy-duty materials and designed for the long haul, the Clydesdale Saw Horse is surprisingly affordable, and would pay for itself in the time and materials savings it made possible. 
     Although this invention has been described with respect to specific embodiments, it is not intended to be limited thereto and various modifications which will become apparent to the person of ordinary skill in the art are interested to fall within the spirit and scope of the invention as described herein taken in conjunction with the accompanying drawings and the appended claims.