US1426359A

US1426359A - Adjustable shore

Info

Publication number: US1426359A
Application number: US315446A
Authority: US
Inventors: Church William Lee
Original assignee: UNIFORM Co
Current assignee: UNIFORM Co
Priority date: 1919-08-05
Filing date: 1919-08-05
Publication date: 1922-08-22
Anticipated expiration: 1939-08-22

Description

W. L. CHURCH.

ADJUSTABLE SHORE.

APPLICATION FILED Aue.5, I9I9.

Patented Aug. 22, 1922.

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. L. CHURCH.

ADJUSTABLE SHORE. APPLICATION Flu-:n AuG.5. 1919.

Patented Aug; 22, 1922.

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` a speciiication.

WILLIAM Lun enuncia, or NEWTON cnNTER, MASSACHUSETTS, ASSIGNOR To Uni- FORM contri/mv, n oonroRATroN or MASSACHUSETTS.

ADJUSTABLE SHORE.

Specification of `Letters Patent.

Patented Aug. sa, ieee.'

Application le. August 5, 1919. Serial No. 315,446.

a citizen of the United States, residing atv Newton Center, -in the county of Suffolk and State of*l Massachusetts, have invented certain new and useful Improvements. in Adjustable Shores, ot which the following is This invention relates to shores or struts for supporting forms :tor concrete lworlrand the like, and it has for one of its primary objects the provision of an improvedshore which will form:l permanent equipment, ca-

pable of repeated use and ready shipment,l in contradistinction to the temporary shor# ing which is ordinarily constructed on the ground and discarded upon the completion of the operation.-

head for-shores. i f

My invention also contemplates thev provision of improved means for rendering the shore adjustable, the arrangement being such, however, that the parts of the shore are positively held in positions of adjustment and settling of the shoreis prevented.-

Still another object of my invention resides in the provision of an adjustable shore in which very close adjustment is obtained, and in which, in addition, wear on the parts is reduced to a negligible factor.

I accomplishl the foregoing togetherrwith such other object-sas may` hereinafter appear, byv means of a construction, the-pra ferred embodiment of which I have illustrated in the accompanying drawings wherey Figure 1 is a fragmentary side elevationside elevation 4oi: the upper portion ofthe center support of the shores; Figures l and 5 are side elevations of a vmodified-form of head cross piece; F igures', 7 and 8 are side elevations of the shore showing the means wherebythe same may be adjusted in height and illustrating the manner iii-which adjustment is effected; Figure 9 is a lperspective of a detail of my invention whereby it is possible to obtain very close adjustment of the shore to the work; and Figure 10 is a shown -in Figure 9.

j In Figures and 5y, I have shown modi-v Referring now to Figures 1 and 6,it will be seen that theshore comprises the center support the side members or'pieces 8; and the collapsible headindicated as al whole byreference letter A.

i The head comprises the cross piece 9 and the braces 10.v The head is detachably supported on the strut as follows: i

On each of two opposite `sides the center support 7 is provided with a cheek 11, pref! era-bly 4in the form of a metal'plate securedv to the top of the center support `by any preerred means, such for example as the screws M12, the upper: edges of theV cheeks projecting slightly'abovethe top of the'support. The cross piece 9 is provided with' a pair 'otjop-` positely disposed downwardly projecting irons 1 3, secured to they lower face-0f' thev cross piece andspacedjapart 'so asto ttheend of the center support. `The cross kpiece `matically centeredfthereonl and held "fas y members such, for 'eXample,-as the angle Another object of the invention resides'in" the provision of .an improved collapsible sor vagainst rotation, as well as movement rela- 1 tive to the center post or support inv any lateral direction. krIhe braces l0 secure .the

cross piece to thecenter support andA also vbrace the cross piece; Each braceI is bolted to the cross piece by ymeans of'a bolt 141er swinging movement relative thereto.` f' The braces are secured to opposite faces of the 'cross piece "and at `theflower ends they are `apertured to receive thev bolt 17",l which is'- adapted .to be` alsoijpassed throughl the bolt hole 18 of the center support.- It will bel seen that 'by this arrangement the head is securely but Idetachably fastened to and supportedfrcm the center support.'`

In order that the head maybe ycollapsed into compact form, suitable for shipment,l I provide .a'hole 19in the cross piece 9 midway between the holes for the bolts 14;. and in `each brace 10,2'I drill'a 'hole 2O at such apoint that when the braces areswung to the position shown'in Figure-2, the bolt holes 19 and 2O willicoincide so .that'the bolt 17, previously withdrawnin` order to center support, may be utilized to'` secure the parts in the positionv shown in Said-tigure. Noextra parts kare thuslrequired.

i oc

, l permitthe removal of' the-hea'd-.fromthevl CII ications of the means for centering the cross l'iead on the center support. ln the construction of Figure t, l provide a pin 2l adapted to lit into a hole drilled in the top of the center support; and in Figure 5, l cut a shallow groove or recess 22 in the lower face of the cross piece of a width suiiicient to fit the center support.

Referring now to the means for adjusting the shore as to length to suit the particular work in hand, l provide the side pieces 8 with a plurality of holes o, t, c, etc., preferably spaced equidistantly, and l4 provide the center support with a plurality of holes a, c', etc., also preferably spaced equidistantly, the distances between the holes a, t, c, etc. being slightly greater than the distances between the holes a', Z5', c', etc. For purposes vofillustration this difference between such distances may be taken as one inch, the distance 'rt-b being 6 and b 5".

Referring now to Figure 6, when the center support 7 is in lowermost position, the holesa and a will be in alinement, which will bring the holes j and `g and the holes ,7c and m into register. Bolts 23 may be passed lthrough any desired number of the alined or registering` openings. YWith the parts in the position `shown in Figure 6 there will be no extension of the shore and assuming that an extension of one inch is desired, the center support. is raised one inch which will bring holes t and Vg and 7L and Z and n into alinement for the receptionA of bolts 23. For eve-ry additional inch in length desired, the rcenter post is raised, bringing into registry other sets of bolt openings.

ln Figure Sil have illustrated a 23 inchv extension which brings thefopenings z' and f into registry for the reception of a bolt. It will be notedA that as the shore is eX- tended the position of the bolts rises until with a 23 inch extension, as shown in Figure 8, the upper bolt is in the top holes in' the side pieces and the lower bolt comes above the center of the side pieces. lf now an additional extension of one inch be made the openings e and a will vcoincide thus bringing the bolts inte lowermost position, i. e. with reference to the center support, and permitting of a still greater extension of the strut. For all practical purposes an extension of 29 inches' will suiice and for this extension 7 ft. side pieces will be required.

lt will be seen that the adjustment depends upon the differential relation of the Vbolt openings, which may be said to be graduated as to spacing somewhat `in the nature of aY Vernier scale.

`lt-will be `noted from the foregoing that a wide range of adjustment is made possible by this arrangement and it is further to be noted that the shore is positively held in positions of adjustment so that settling cannottake place and there is little or no wear on the parts. lt will of course be understood that my invention is not limited to the precise graduation specified, but l have found this to be the most satisfactory under practical service conditions.

lf closer adjustment is required, particularly where it is desired to avoid the use H of wedges, l provide the supplemental devices shown in Figures 9 Vand l0. ln adapting the shore for the application of such a device as is shown in Figure 9, l cut off a piece about 6 inches in length from the 'lower end ofthe center support 7' and drill holes in the side pieces for the reception of a bolt2d on which the substantially square bloclr may be revolubly supported between the side pieces. The bolt receiving hole in the bloclr is located to one side of the true center thereof, as for example two inches from the bottom face AB of the block, two and one quarter inches from the face CB, two and one half inches from the face Cl), and two and three quarter inches from the face DA. The width of the block is such that the block -iits neatly between the 'side pieces so that it may be rotated when the bolt is eased off and tightly clamped between the side pieces when the bolt is tightened. y

lVlien the face AB is down7 it will be flush with the ends of the side pieces,y and there will be no extension 'of the shore. lf the blocl: be new turned to the right one quarter, so that the face BC is at the bottom, there will be an extension of the shore one quarter inch, for the reason that the face BC will project one quarter inch beyond the ends of side pieces. lf the block be turned one half, the face CD will be at thebottom and the extension `of the shore will be one half inch, and if the face DA is at the bot- Y tom, the extension will be three quarters of an inch. Thus, for example, after the main adjustment has been effected as hereinbefore pointed out, a finer adjustment in quarter inches may be had. n

lf a still closer adjustment is required this can be accomplished 'by means of the modification of Figure l0, in which, instead of providing a substantially square vblock as shown in Figure), l provide an irregular or distorted octagonal block with 'the radii to the different facesr varying by increments yone one-eighth of an inch, say for example from two inches to two and seven-eighths inches. Such a block becomespin effect a` virtual cam.

l claim: l

l. A. shore comprising in combination a supporting member and a collapsible head therefor, comprising a cross piece anda pair of braces pivoted to the cross piece for f tive to the'cross piece.

3. A shore comprising in combination a supporting member and a collapsible head, said head comprising a cross piece and braces pivoted at one end to said cross piece, a bolt adapted to detachably secure the opposite ends of the braces to the supporting member, and bolt openings in the braces and cross piece adapted to register when the braces are collapsed whereby said bolts may be utilized in holding the members comprising the head in position of collapse.

4. shore of the character described comprising in combination a supporting member, a detachable head,

tively positioning said members, said means comprising a pair of spaced angles secured to the lower face of the head and a pair of plates secured to opposite faces of the supporting member and projecting thereabove, and means detachably securing the head to the support.

5. A shore of the character described co-mprising in combination a supporting member, a collapsible head, inter-engaging means on said support and head for relatively positioning said members, and comprising a pair of spaced angles secured to the lower face of head and a pair of plates' secured to opposite faces of the supporting member and projecting thereabove, said colj lapsible head including a pair of braces inter-engaging means on said support and head for rela-l pivotedjthereto, and means for detachably securing the braces to the supporting mem-` ber.

described comprising in combination one lmember provided with a plurality of holes equally spaced and a second member also provided with a plurality of holesvequally spaced but the distance between holes being of a different dimension thanon the firstl member, said members beingrelatively movable and the relation betweenthe two sets of holes being in eEect that of the markings 6. An adjustable shore of the character on a vernier scale, and said membersbeing f of suilicient length to bring at least two pairs of holes in alignment in all positions of normal working adjustment between the members, `and a supporting-member adapted to be passed through the aligned holes.

7. `n adjustable shore of the characterv described comprising in combination a pair of cooperating relatively movable members each of which is provided with a set-of means for support, the relation between which sets is that of the `markings on a vernier scale, said members being yof suf- `ficient length tobring .at least two pairs of the means for support in alignment in yall positions of normal working adjustment be-v tween the members, and supporting members adapted to be applied to the pairs of aligned means for support. y

8. The combination with a shore comprising membersy eXpansible in given increments after the manner of a Vernier scale as described, of an expansible element cooperating therewith consisting of a turnable prismatic member, the supporting faces of which are dierently spaced, and the spa'cing increments of which are' smaller than said first mentioned incrementsy whereby more close adjustment of the shore can be obtained.

In testimony whereof ysigned mylname.

l wiLLIAM LEE CHURCH.

I have hereunto