US1730618A - Adjustable shore - Google Patents

Description

Oct. 8,, 1929. T. MAYO 1,730,618

ADJUSTABLE SHORE Filed Aug. 10, 1926 Patented Oct. 8, 1929 UNITED STATES THOMAS MAYO, OF INGLEWOOID, CALIFORNIA ADJUSTABLE SHORE Application filed. August 10, 1926. Serial No. 128,354.

My invention relates generally to building equipment and more particularly to a shore or strut that is utilized for supporting elevated or overhead building structures such as concrete forms, and the principal objects of my invention are to generally improve upon and simplify the construction of the existing forms of shores, and to provide a supporting structure of the character referred to that may be easily and economically produced and which may be readily adjusted so as to support forms or overhead work at different ele- Vations.

Further objects of my invention are to provide a shore that is constructed so that the strains and stresses of the supported weight are transmitted on central lines through the shore; further, to provide simple and efficient a means for firmly securing to each other the telescopic parts of the shore; and further, to provide simple and efficient means whereby two or more of the shores that are arranged in a row beneath a supported structure may be firmly tied to each other, thereby providing a a reinforced and strengthened structure that will not tend to collapse under the weight of the supported forms or work.

lVith the foregoing and other objects in view, my invention consists in certain novel features of construction and arrangement of parts that will hereinafter be more fully described and claimed and illustrated in the accompanying drawing, in which Fig. 1 is a perspective View of an adjustable shore of my improved construction.

Fig. 2 is an enlarged horizontal section taken on the line 2 2 of Fig. 1.

Fig. 3 is an enlarged horizontal section taken on the line 33 of Fig. 1.

Fig. at is a perspective View of a plate that is carried by the upper one of the telescopic members forming the body of my improved shore.

Fig. 5 is an enlarged vertical section taken on the line 55 of Fig. 1.

Fig. 6 is an enlarged vertical section taken on the line 66 of Fig. 1.

Referring by numerals to the accompanying drawings which illustrate a practical em bodiment of my invention, 10 designates a hollow or tubular post preferably formed of metal and which constitutes the lower member of the shore, said post being preferably square in cross section and its lower end closed by an integrally forn ed or welded plate 11.

Formed throughthe walls of this hollow post are apertures 12 that are arranged in pairs with the members of each pair in horizontal alignment and the pairs of apertures in the side wall are staggered or disposed in horizontal planes between the horizontal planes occupied by the pairs of apertures in the front and rear walls. This particular arrangement of the apertures is for the purpose of providing for relatively close vertical adjustment of the two parts of the shore.

Formed integral with or fixed to the upper portions of the side walls of the tubular member 10 are outwardly presented ears 13 that are perforated in order to receive nails, screws, or like fastening devices, and these ears provide bearings and points of attachment for horizontally disposed tie or brace members 14 that are utilized in connecting the members forming a row or series of the shores, thus reinforcing the sameand tending to prevent the same from shifting out of their normal vertical positions.

The upper member of the shore, and which is arranged for sliding movement within the hollow or tubular member 10 comprises a square timber 15 that carries at its upper end a head 16 of any suitable construction, al-

though I prefer to utilize a head that includes as its upper member a short horizontally disposed block or rail 17 of wood.

Secured in, any suitable manner to the under face of the upper member 15 is a metal plate 18 from the edge of which depend two pairs of perforated cars 19 and 20. The ears 19 are slightly longer than the ears 20 and the vertical distance betweenthe perforations in said pairs of cars is equal to the vertical distance between the pairs of perforations 12 in the tubular post 10.

As a result of this arrangement, the upper member 15 f the shore may be adjusted vertically relative to the lower member 10 and when the apertures in the ears 19 and 20 pix register with corresponding apertures 12 in member 10, pins or bolts 21 may be inserted through the coinciding pairs of apertures, thus very securely locking the two parts of the shore to each other in the desired adjiusted L position. The bolts or pins 21 that are 1nserted through the apertures are arranged at right angles to each other and the upper one of said pins or the one that is inserted through the short pair of ears 2O bears directly against the under surface of plate 18.

In order to firmly lock the upper shore member to the upper portion of tubular member 10 and prevent any vibration between the parts due to a loose fit between the same, a set screw 22 is seated in one of the walls at the'upper end of tubular member 10, and which set screw, when tightened, bears against the corresponding surface of upper member 15.

In the use of my improved shore the lower end of member 10 is placed on the floor or suitable support and upper member 15 is now adjusted vertically so as to position the upper member 17 of the head against the form or ob1ect to be supported, after which the two parts of the shore are locked to each other by insertion of the bolts or pins 21 through certain of the apertures in member 10 and through the perforations in the ears 19 and 20 of plate 18.

In the event that it is desired to slightly elevate the entire shore so as to bring the upper member into close engagement with the supported work, wedges such as 23 may be driven into position between the lower end of member 10 and the floor or base upon which the same rests.

Due to its portability and the ease with which it may be adjusted and handled, my improved shore may be advantageously employed in all building operations where temporary supports for overhead structures are desired and said shores may be also employed to advantage in ship yards or wherever large structures are produced and fabricated.

The construction of the shore is such that it has great strength and stability and the strains and stresses of the supported weight are transmitted on central or axial lines dir ctly through the entire structure.

Thus it will be seen that I have produced a shore that is inexpensive of manufacture and which possesses superior advantages in point of simplicity, durability and general efficiency.

It will be understood that minor changes in the size, form and construction of the various parts of my improved shore may be made and substituted for those herein shown and described, without departing from the spirit of my invention, the scope of which is set forth in the appended claim.

ll claim as my invention:

In a. shore, a hollow lower member provided in its walls with perforations, an upper member arranged for sliding movement within said hollow lower member, a plate permanently fixed to the under face of the upper member, the area of which plate is equal to the'area of the under face of said upper member, perforated ears depending from the side edges of said plate, which ears are arranged in pairs and said pairs being disposed at right angles to each other, one pair of ears being longer than the other pair, the outer faces of which ears bear against the inner faces of the walls of the hollow lower member and pins removably seated in the apertures in the walls of the lower members and in the perforations in said ears.

In testimony whereof I aflix my signature.

THOMAS MAYO.

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