US657396A - Scaffold. - Google Patents

Description

G. CURLEY.

S C A F F 0 L D (Application Mei-Apr. 12, 1900.)

No. 657,396. Patented Sept. 4, I900.

' (Nd Model.)

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UNITED STATES PATENT OFFICE.

GEORGE CURLEY, OF sALT LAKE oITY, UTAH.

SCAFFOLD.

SFEGIFIGATION forming part of Letters Patent N 0. 657,396, dated September 4, 1900.

Application filed April 12, 1900. Serial No. 12,607. (No model) 10 all whom it may concern:

Be it known that I, GEORGE CURLEY, residing at Salt Lake City, in the county of Salt Lake and State of Utah, have invented a new and Improved Scaffold, of which the following is a specification.

My invention relates to improvements in that class of portable: scaffolding comprising, essentially, a'pair of standards, in each of which is held for verticalmovement brackets for supporting the masons platform, which also includes suitable elevating mechanism capable of being manipulated by the mason for elevating his platform as may be desired.

In its general nature my invention comprehends a simplified arrangement of platform, supporting brackets slidable upon the standardsand in combination therewith supplemental bracket members capable of being readily suspended from the-masons-plttform supporting brackets and having a simple arrangement of abutmentshoes or blocks adapted to engage the standards, freely slidable on the outer surface thereof and adapted to serve as positive bracing means for holding the said supplemental brackets (intended to support the hod-carriers platform securely. in position without the aid of screws, bolts,

and other like securing means.

My invention also includes in its complete make-up a form of bracket slidable vertically within a slotted standard, the front end of which is peculiarly constructed to form a practical and simple supporting means for detachably-heldendwise-proj ecti'n g brackets adapted to support corner or return-platform sections and having its rear or'oth'er end constructed to support a pendently-hung hodcarriers-platform-supportingbracket;

In its more subordinate features my in vention consists in certain novel combination of parts and details of construction, all of which will be first described and then specifically. pointed out in the appended claims, reference being had to the accompanying drawings, in which- Figure 1 is a perspective view of a scaffolding constructed in accordance with my invention. Fig. 2 is a transverse section of the same on the line 2 2 of Fig. 1. Fig. 3 is a detail section taken practically on the line 3 3 of Fig. 2. Fig. 4 is a horizontal section of one of the scaifolding ends, taken on the line 4 4 of Fig. 2. Fig. 5 is an end view of the hod carriersscafiold supporting platform. Fig. 6 is a perspective view of one of the return-platform brackets hereinafter referred to. Fig. 7 is a detail view of one of the center-board bridge-supporting members. Figs. 8 and 9 are detail views of modified forms of bracket hereinafter referred to,and Fig. 10

is a view of a further modification of the bracket hereinafter described. a

Referring now to the construction illustrated in the drawings, in which like numerals indicate like parts in all the figures, the same includes in its make-up a pair of standards l 1, which consists of two like side members, the upper ends of which are braced by 'a transverse rod 2, having a head 2 at one end, itsother end terminating in a nut-receiving portion 2 the said rod also acting as the upper support for the elevating devices presently referred to. The lower ends of the standard members are joined with the transverse foot portions 3 and braces 3, that form a solid base for the said standards. Upon the inner side each standard member has a vertical tongue 1, that extends nearly the full height of the standards, and the said tongues form guides for steadying the slidable brackets 4, as best shownin Fig. 4.

Within each standard is held for vertical movement a bracket member 4, which I shall hereinafter term the masons-scaifold bracket, and each of the brackets 4 comprises a pair of timbers 4, held in a like vertical plane and having a width to snugly fit the space between the two standard members in which they slide and to steady the movement of the said brackets 4 in their vertical movement, and also to more firmly hold them to their adjusted positions the fixed vertical edges of the said brackets are grooved, as indicated at 4 to engage the tongue 1 of the standard members, (see Figs. 2 and 3,) and to still further hold the said brackets on the standards the outer sides of the two timbers 4 are connected by vertical bars 4*, so spaced apart'as to snugly ride upon the front and rear edges of the outermost one of the two members that constitute the standard, an additional holding meansin the nature of a cap-board 4 being also provided, which g v I 657.390,

, board is nailedto the outeredges of the bars 4 to closely lap ortravel over the outer face of the outermost one of the standardmembers, as clearly shown in Fig. 1; The front .ends of the timbers 4 are joined by short vertical bars 4:, which add strength to the brackets and also form sockets 4 for the heel portion 5 of corner or return-platform brackets 5, one of which is shown in Fig. 6,

and consists of the short horizontal beams 5 thevertical bars 5, and the heel portion 5,

before referred to.

By constructing the brackets 4 in the manner described. and providing the brackets 5 a simple, quickly-adjusted, safe, and effective means is produced for forming supports having end or corner retu rn-scaifold sections. Thevrear ends of the brackets 4 are left open, and the-said ends are braced by the diagonal bars 4'. The'object in leaving the extreme ends open is to permit of a quick attachment of the hod-carriers-platform-support+ ing brackets. "These brackets each consist of a base member 6,'a vertical member 6*, projected upward, and a forwardly-projecting brace-barfi that connects-with the member 6, a bearing block or shoe 6 also forming a part of the brackets 6, the, same being'secured upon the front end of the base-timber 6, said shoe having a width'at least equal that of the width of one of the standards.

To the upperend of themember 6? is made fast a FI-shaped iron or clip 6, the function of'which-will be readily understood by referring to Fig.1. f a a Any suitable means may be provided for lifting the scaffold-supporting brackets operative from themasons scaffold, but I prefer to use the means illustrated in the accompanying drawings, which consist of a'gripblock and tackle, and the upper or supporting' block 7, having a hanger-hook 8, that en of the standards.

gages and is hung upon the hook 2 at the top 8 designates a grip-block of any suitable construction. i

In the practical application of my invention planks 9 are laid upon the front and rear extensions of the brackets 4 to brace the masons scaffold, and the said boards 9 extend beyond the inner edges of the standards, as shown, and to close up the space between the innermost long planks X X a shorter board 10 is. held in the said space flush with the remaining planks, which'board is supears 11*, that rest upon the upper face of the adjacent edges of the planks X X, asclearly illustrated in Fig. 1.

The boards having been properly laid upon the masons brackets 4 brackets 4 being supported thereon by the rods'12, that pass centrally through the upper and lower members of the brackets 4, as best shown in Figs. 2 and 3, elevates the masons platform to the desired height, it being understood thatso long as the masons scafiold is not shoulder-high the brackets 6 need not be used. Now after the masons 'scafiold has been lifted so high that a hodcarrier cannot conveniently throw the material-thereon, the brackets 6 are hung onto the rearfr'ee endof the brackets 4, and with their shoeportions made to bear firmly against the rearfaces of the standards 1, it being manifest that by this arrangementof parts it is impossible forthe hod-carriersscafiold to become loosened from. the brackets 4. under ordinary uses. Furthermore, by forming the hod-carriers brackets in the manner shown I am enabled to secure a very strong and effective support for the hod-carriers scaffold and'gat the same time effectively brace the same againstseparating fromthe brackets 4, making it, as it Were,'a very simple, quicklyadjustable, and effective means for connecting the hod-carriers-scafiold brackets to the .masons-scaifold brackets without the use' of bolts, nuts,- and screws, or other fixedly-held fastening means.

corner and support a platform thereon, it is Onlynecessary to insert theheel portion of the brackets 5 into the opening made at the front ends of the brackets 4;.

' My invention'is exceedingly simple, and

adapted for masons and bricklayers uses, &c. ,I desire it understood that the same with little or no modification "can be readily employed as-scaflfold for ordinary uses, and, for example, for light uses around houses,stores, &c.,and the special bracket,such as illustrated by 8, maybe pro'vided,which consists of a single transverse timber 14 and a central pendent member 14, having grooves 14 in its edges to engage with the tongues upon the inner sides of the standards having forwardly and rearwardly' inclined brace-bars,as shown.

In Fig. 9 is illustrated a further modification of the scafiold, which is especially adapted to be used in place of the latter and may be "made of suitable light material.

From the foregoing description, taken in connection with the accompanying drawings,

,it is thought the manner in v which my imported upon -shaped hangers 11, the ends of which terminate in horizontally-extending 1 understood that the hod carriers scaffold is supported sufiiciently below the masons scaffold, so that the bod-carrier can. throw the (When it is desired to makea return at the while I have describedit as being especially material shoulder-high onto the masons scafkiln the upper brick can be lowered by means necessary at each end for properly supportplatform adapted to be detachably hung from fold. Furthermore, in practice the hod-carriers scaffold projects sufliciently out from the masons scaffold as to permit the ready use with the said hod-carriers scaffold of a runway.

Fig. 10 illustrates another form of bracket adapted for use with'my arrangement of elevatin g mechanism. This bracket (indicated by 20 in the drawings) has its ends arranged to project upward from the scalfold-supporting beams 20 instead of downward, as is the case with the bracket-s 4, and the guide or lift studs 20 of thesaid brackets 20 are braced at the sides by diagonal timbers 22. In this form of bracket three yoke-frames 11, are

ing the scaffold-planks, as clearly shown in Fig. 10. This type of bracket is especially useful for elevating wheelbarrows carrying brick or other material, as the scaffold-platform can be brought down flushwith the ground to permit the wheelbarrows being readily run on or off, and thereby dispense with runways.

Among other advantages my improved scaffold and elevating devices will be found useful in brick-yardsfor brick-setters piling green brick and when discharging the burned of one section of my scaffolding, saving, as it were, the service of the man who usually passes the brick from one workman to another.

While I have not so illustrated it, the form of brackets shown in Figs. 8 and 10 may be equipped with the end guide or stay members 45 to steady the brackets as they slide up and down the standards 1.

Having thus described my invention,what I claim, and desire to secure by Letters Patcut, is

1. A scaffold, comprising in combination a pair of supporting-standards and masonsplatform-carrying brackets vertically movable on each standard, means for elevating the said brackets, each of the said bracket-s having a forwardly-extending portion and a rearwardly-extending portion, a hod-carriers the masons platform, said hod-carriers p1atform including a supporting-bracket having means for hanging pendently from the masons-platform bracket, and a shoe adapted to slidably engage the standard, as set forth.

2. In a scaffold, the combination with the standard comprising two .parallel members each having avertical tongue-piece on the inner face, a hanging bolt or loop mounted in the upper end of the two members; of a bracket consisting of upper and lower horizontal timbers joined to move together, said timbers being adapted to extend transversely between the standard members and having grooves to engage the tongues on the said members, the lift-rod 12, and the block-andtackle devices connecting with the lift-rod 12 l tachably hung from the masons-platform supporting bracket, as specified.

4:. In a scafiold as described, the combination with the standard formed of two parallel members having a suitable base connection, and a hanger-rod at the top; of a bracket consisting of the two bars 4 4, adapted to extend a transversely between the standard members,

the vertical bars 4 4) connecting the bars 4, and forming guides to engage the edges of the standard; the lift-rod 12 and the blockand tackle devices connected to' the liftrod and to the top hanger all being arranged substantially as shown and described.

5. The hereinbefore-described scaffolding, consisting of a pair of standards each formed of parallel members connected to the suitable base and having a transverselydisposed hanger-rod at the top, the inner faces of the parallel members having vertical guidetongues, the brackets 4, consisting each of an upper and a lowerbar l adapted to pass transversely through the standards and having grooves at the sides to engage the tongue of the standards, said brackets also having external guide-bars 4, engaging the edges of 6, provided with a clip or cuff ' member 6, 7

adapted to slip over the free end of the lower bar 4, of the brackets 41:, the forward end of the bracket 6, having a shoe 6 adapted to engage the sides of the standard, and the block-and tackle devices for elevating the brackets, all being arranged substantially as shown and described.

6. In a scaffold of the character described, the combination with the standards and the brackets 4, vertically movable thereon, said brackets having vertical sockets at the forward end, of the end brackets 5, said brackets having heel portions 5*, adapted to engage the sockets in the forward end of the brackets 4, all being arranged substantially as shown and described.

GEORGE OURLEY.

Witnesses:

H. S. YOUNG, J. E. CLINTON.

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