US1065512A - Scaffold. - Google Patents

Description

K. A. ERIKSSON.

SGAFFOLD.

APPLIUATION FILED 0016, 1911.

1,065, 5 1 2, Patented June 24,1913.

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K. A. ERIKSSON.

scAPPoLD.

APPLICATION FILED 00T. 6, 1911.

Patented June 24, 1913;l

3 SHEETS-SHEET 2.

K. A. BRIKSSON.

SGAFPOLD.

APPLIOATION FILED 0012s, 1911.

Patented June 24, 1913.

3 SHEETS-SHEET 3.

'UNITED STATES PATENT GFFICE.

KARL A. ERIKSSON, 0F ROCKFORD, ILLINOIS.

SCAFFOLD.

To all whom t may concern:

Be it known that I, KARL A. ERIKsso-N, a citizen of Sweden, residing at Rockford, in the county of Vinnebago and State of Illinois, have invented certain new and useful Improvements in Scaffolds, of which the following is a specification.

This invention relates to improvements in scaffolds and its object is to produce a device of this class that can be instantly erected without the use of nails or other like fastenings and that, in consequence thereof, is just as easy to take down.

Another object is to produce a scaffold that is very simple in construction, light in weight, durable and efficient and that may be readily transported from place to place. lVith the foregoing and other objects in view the invention consists in the combination and arrangement of parts to be hereinafter fully described in the following specification, pointed out in the claims and illustrated in the accompanying drawings which form a part of the said specification and in which- Figure l is a side elevation of my improved scaffold in use upon a wall that is being erected. Fig. 2 is a similar view showing the scaffold supported entirely by the wall under construction. Fig. 3 is a plan. Fig. 4 is a side elevation of the device showing how it is attached to a window casing. Fig. 5 is a plan of the same. Fig. 6 shows how the scaifolds'may be built one upon the other.

Like reference characters indicate corresponding parts throughout the several views.

My scaffold comprises a body member 1 formed of metal whereon the floor or planks to be supported are placed. The body member is formed with an integral upwardly eX- tending termination 2 and at the opposite end with a downwardly extending terminat-ion 3 and a longitudinal fiange 4 is provided on the under side of the body member; this flange extending from the end of the body portion whereon the downwardly extending termination 3 is secured almost to the opposite end of the member 1 and at its last named termination the termination is beveled at an angle of 45 degrees as at 5. The termination 4 is provided near its beveled extremity with a longitudinal slot 6 and near its center with a plurality of small apertures 7 8 is the leg of the scaffold provided below Specification of Letters Patent.

Application led October 6, 1911.

Patented June 24, 1913. serial No. 653,171.

its vertical center with an obliquely disposed aperture 9. The leg is further provided with a longitudinal flange 10 similar to the longitudinal iange 4 of the body member, beveled like that flange at its upper termination 11 and provided with a small aperture just like the apertures 7 of flange 4 in alineinent with thev oblique aperture 9 in the leg. A link 12 having thumb screws 13 in either end rides over the longitudinal slot 6 and is also secured to the end of flange 10 of the leg. 14 is an arm provided with a pin at either extremity and these pins are adapted to enter small apertures at either end of the said arm. Either pin is carried at one end of one of the two chains 15, the Y opposite end of one of these chains beingV secured to the body member 1 and of the vother chain to the arm 14. The arm 14 is further provided with a plurality of transverse apertures 16. A chain 15 with a pin at one extremity is also provided for engagement with the arm 14 through its apertured portions 1G when desired as shown in F ig. 2.

Operation: Vhen the device is to be used in connection with the construction of a stone or brick wall as illustrated in Figs. 1, 2 and 3, after the wall has been built high enough to need a scaffold, a space is left between the stones or bricks for the insertion of one end of the termination 3 as shown, the leg 8 is placed upright beneath the body member 1, the link 12 tightened up by means of its thumbscrews to hold the members in their adjusted position and the arm 14 so positioned that it will engage the longitudinal anges of both the body and leg members with either extremity thus serving' as a brace and giving the device added rigidity. In this posit-ion the leg of the scaffold stands upon the ground or on a projection or ledge extending out from the wall corresponding to the ground line. After the construction of the wall has progressed to such a point that the scaffold in this position will no longer be of use it may be used as illustrated in Fig. 2 wherein the wall under construction is used alone to support the scaffold. In this case a niche is made in the wall to receive the lower end of the leg S, the leg is then inclined at an angle of 45 degrees with the body 1 thus bringing the beveled extremities of the fianges 4 and 10 together in which position the link 12 is tightened; as a brace the arm 14 is now projected through the aperture 9 in the leg and by means of the pin on chain l5 these members are tempo rarily locked together as shown. Fig. 3 shows in dotted lines how the flooring is retained upon the body l.

Should it be desired to use the device as a scaffold for washing windows or the like it may be used as illustrated in Figs. i and The device is erected in a manner similar to that describing Fig. 2, the downwardly ex tending 'termination 3 being placed over the window sill on the inside and the scabld extending out and away from the window, the exception to Fig. 2 being that a temporary cleat 17 projecting above the body l is suitably fastened to termination 3 inside the window and between this temporary cleat and the window or wall a plank 18 is placed as a support, the ents of the plank extending beyond the sides of the window casing. If desired the temporary flooring used upon the scaffold may be made with transverse cleats as illustrated at i9 in Fig. 5, dotted lines, when it will not be necessary to further secure them to the body member l as these cleats 19 are so spaced apart as to fit over and obtain a purchase upon that portion.

lf desired in the course of wall construen tion or on other occasion the scaffolds may be built one upon the other as shown in Fig. 6. rlhe lower end of the leg of one scaffold is bolted to the upwardly extending termination of the scaffold beneath it.

What claim is :u

l. fn a scaffold, body member formed with oppositely projecting integral terminations, a longitudinal flange beveled at one extremity and provided with a longitudinal aperture at its beveled extremity and with a plurality of apertures between its ends, a leg havin g an oblique aperture below its vertical center, a longitudinal flange secured to the said leg beveled at one extremity and provided with an aperture in alinement with the aperture in the leg and means for adjusting and locking the aforesaid longitudinal flanges together.

2. In a scaffold, a body member formed with oppositely projecting integral terminations, a longitudinal flange beveled at one extremity and provided with a longitudinal aperture at its beveled extremity and with a plurality of apertures between its ends, a leg having an oblique aperture below its vertical center, a longitudinal flange secured to the said leg beveled at one extremity and pro vided with an aperture in alinement with the aperture in the leg, a link connecting the said longitudinal flanges, an arm provided with terminal apertures and pins adapted for removable insertion in the apertured portions of the several members.

3. 'In a scaffold, a body member formed with oppositely projecting integral terminations, a longitudinal flange beveled at one extremity and provided with a longitudinal aperture at its beveled extremity and with a plurality of apertures between its ends, a leg having an oblique aperture below its vertical center, a longitudinal flange secured to the said leg beveled at one extremity and pron vided with an aperture in alinement with the aperture in the leg, a link connecting the said longitudinal fianges, an arm provided with terminal apertures and with a plurality of apertures between its ends and pins adapted for engagement with the apertured portions of the device whereby they are locked in adjusted position.

a. ln a scaffold, a body member formed with oppositely projecting integral terminations, a longitudinal flange beveled at one extremity and provided with a longitudinal aperture at its beveled extremity and with a plurality of apertures between its ends, a leg having an oblique aperture below its vertical center, a longitudinal fla-nge secured to the said leg beveled at one extremity and provided with an aperture in alinement with the aperture in the leg, a link connecting the said longitudinal flanges, an arm provided with terminal apertures and with a plurality of apertures between its ends, pins adapted for engagement with the apertured portions of the device and a temporary cleat adapted for engagement with the aforesaid downwardly extending termination.

ln testimony that I claim the foregoing as my own l have hereto affixed my signature in the presence of two subscribing witnesses.

KARL A. ERKSSON.

7llfitnesses JOHN JOHNSON, GUsr GUsTArssoiv.

Copies or this patent may be obtained for five cents each, by addressing; the Commissioner of Patents,

Washington, D. C.

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