US3503466A - Scaffold moving and guiding device - Google Patents

Description

March 31, 1970 J. E. ROSANDER SGAFFOLD MOVING AND GUIDIHG DEVICE INVENTOR. Judge E. Rosander 8% mg;

ATTORNEY United States Patent 3,503,466 SCAFFOLD MOVING AND GUIDING DEVICE Judge E. Rosander, 7200 W. Arkansas Ave., Denver, Colo. 80226 Filed Oct. 7, 1968, Ser. No. 765,556 Int. Cl. E04g 1/24 US. Cl. 182-13 8 Claims ABSTRACT OF THE DISCLOSURE In combination with a wheel supported scaffold having vertical and horizontal members connected together, a scaffold moving and guiding device which comprises a wheeled motor driven frame, a transversely extending bolster having extension means movable in directions at right angles to each other for fastener-free engagement with transverse and vertical members of the scaffold, and a standard mounted on the frame for guiding and controlling the movement of the frame and scaffold when engaged by the extension means. The bolster is pivotally connected to the frame to permit movement of the scaffold and frame relatively to each other when a wheel passes over an uneven surface.

This invention relates to a scaffold moving and guiding device used in combination with a scaffold which comprises vertical and horizontally transversely and longitudinally disposed members, with wheels on the lower ends of the vertical members.

The main object of the invention is to provide means in the scaffold moving and guiding device for adjustable fastener-free engagement with vertical and transversely extending members of the scaffold, whereby an operator on the scaffold can move and guide the scaffold without dismounting the scaffold.

Another object is to provide means for quickly and easily retaining the scaffold engaging means in adjusted positions on the device to engage the scaffolds and to move the scaffold in any direction by movement of the device of this invention.

Another object is to provide extensible means for adjusting the moving and guiding device to engage scaffolds of varying heights.

Another object is to provide means in the scaffold moving and guiding device which permits relative movement between the device and the scaffold and prevents binding of the engaged parts when a wheel on the device or scaffold encounters an uneven surface.

Other objects and advantages will become apparent from the drawings and following specification.

FIG. 1 is a perspective view of a scaffold moving and guiding device embodying my invention.

FIG. 2 is an elevational view of the bolster which is part of the device, detached from the rest of the structure.

FIG. 3 is an enlarged elevational view, partly in section, of the means for holding the scaffold engaging members in adjusted positions in the bolster.

In that embodiment of the invention shown in the drawings, a horizontal platform 10 is mounted on a frame 11 and supported on a front wheel 12 rotatable in yoke 13 and on two rear wheels 14 rotatable on an axle 15. The rear wheel axle 15 is connected through gearing (not shown) in a housing 16 to a motor (not shown) powered by battery 17 mounted beneath the frame 11.

A bolster 20 extends transversely of the platform 10 in a horizontal plane beneath the frame 11. The bolster is connected to the frame 11 by a long bolt 21 which has an apertured head 22 and a shank surrounded by spring 23 held in place by nut 24. A pin 25 extendsd through ice the head 22 and pivot block 22' and permits the bolster to pivot relatively to the platform 10 when relative movement between the frame 11 and bolster 20 occurs.

The bolster 20 is hollow and square in cross section. Near its outer ends, the bolster has vertical extension means 26 provided with apertures 27. The outer horizontal ends 28 of the bolster are provided with apertures 29. Extension members 30 with end clevises 30' are telescopically mounted in the vertical extension means 26 and have apertures 31 registerable with the apertures 27. Extension members 32 with end clevises 32 are telescopically mounted in the horizontal ends 28 of the bolster and have apertures 33 registerable with the apertures 29.

The extension members 30 and 32 are retained in manually adjusted positions within the bolster members 26 and 28, respectively, by pins 35 provided with eyeletted ends 36 and springs 37 surrounding the pins between their eyeletted ends 36 and the bolster walls they abut, as shown in FIG. 3, where the pin 35 extends through aperture 27 of extension means 26 and through registering aperture 31 in the telescoping member 30. The extension members 30 and 32 are manually adjusted to engage parts of the scaffold as hereinafter described.

The front wheel yoke 13 has connected to it a steering rod 40 which extends upwardly into the hollow housing 41. Pins 42 similar to the pins 35 heretofore described connect a standard member 43 to the pivotal joint 44 which is connected to the hollow section 45 of the standard, which in turn is connected by pins 46 to a handle 47 which terminates in a horizontal portion 48 and grip 49. A switch button 50 is mounted adjacent the grip and is connected to electrical wiring 51 having a plug 52 for insertion in socket 53 on section 45. The socket 53 is connected to wiring 54 provided with a plug 55 received in socket 56 in platform 10.

A scaffold steadying bracket has arms 57 integral with or connected to a sleeve 58 slidable on the section 45, the arms having clevises 59 for engaging a transversely extending part of the scaffold.

The scaffold comprises conventional parts such as spaced apart uprights 60, horizontal transverse bars 61 and longitudinal bars 62. Wheels 63 are rotatably mounted on the lower ends of the uprights 60.

The scaffold moving and guiding device is moved manually on the wheels 12 and 14 into position relatively to the scaffold. The extension members 30 with clevises 30' are adjusted by pins 35 to move the clevises into engagement with a transverse bar 61 of the scaffold. The extension members 32 with clevises 32' are moved outwardly to engage the uprights 60 of the scaffold. The clevises engage the scaffold parts without employing any fastening means; only the extension members 30 and 32 are adjusted by pins 35 to retain them in proper positions. The scaffold steadying bracket clevises 59 may be fastened to a transverse bar 61 of the scaffold by pins such as the pins 35, although engagement can be maintained without any fastening means.

After the device has been positioned as shown and described, with the clevises engaging the scaffold, the operator may mount the scaffold and move and guide the scaffold without dismounting. The motor control 50 is within reach of the operator and the handle grip 49 permits easy guiding of the device and scaffold. The pivotal bolster mounting permits relative movement of the device and scaffold and permits the wheels to roll over uneven surfaces without binding of the scaffold parts in the clevises 30' and 32'.

An additional section 45 with wiring and plug may be provided for insertion in the upper part of section 45 to lengthen the steering standard when the operator is working on a higher than average scaffold. Likewise, an

extra scaffold steadying bracket comprising the parts 57, 58, 59, may be provided if the steering standard is lengthened by adding an extra section 45.

The extension members which are movable in directions at right angles to each other provide for fastenerfrce engagement with transverse and vertical members of the scaffold, causing the scaffold to move with the scaffold moving and guiding device of this invention in any direction.

I claim:

1. In combination with a wheel supported scaffold having vertical and horizontal members connected together, the improvement in a scaffold moving and guiding device which comprises:

(a) a wheeled motor driven frame,

(b) a transversely extending bolster mounted on the frame having extension means adjustably fastened to the bolster for fastener-free engagement with transverse and vertical members of the scaffold, and

(c) a standard mounted on the frame for guiding and controlling the movement of the frame and scaffold when the scaffold is engaged by the extension means.

2. The scaffold moving and guiding device defined by claim 1, in which the bolster is pivotally and yieldingly mounted on the frame.

3. The scaffold moving and guiding device defined by claim 1, in which the extension means adjustably fastened to the bolster comprise vertical extension members and horizontal extension members telescopically mounted in the bolster, said extension members and bolster having registerable apertures, and pins receivable in the apertures for holding the extension members in adjusted positions relatively to the bolster.

4. The scaffold moving and guiding device defined by claim 1, in which the extension means terminate in scaffold engaging clevises.

5. The scaffold moving and guiding device defined by claim 1, which includes a scaffo d steadying bracket slidably mounted on the standard.

6. The scaffold moving and steadying device defined by claim 1, which includes a handle rotatable in the standard, electrical wiring in the handle and standard, exposed plugs connected to the wiring, and sockets in the standard and frame for receiving the plugs.

7. The scaffold moving and guiding device defined by claim 3, in which the pins for holding the extension members in adjusted positions relatively to the bolster each comprise a shank, an eyeletted head, and a spring surrounding the shank between the head and a part of an extension member.

8. The scaffold moving and guiding device defined by claim 1, in which the bolster is hollow and square in cross section, having a stationary vertical extension near each of its outer ends, a telescoping extension member slidable in each vertical extension, a telescoping extension member slidable in each of the bolster outer ends, a clevis on the end of each telescoping member, and manually actuated means for holding the extension members in adjusted positions in the holder for engagement of the clevises with transverse and vertical scaffold members.

References Cited UNITED STATES PATENTS 2,526,583 10/1950 Schlessman 182-16 3,232,375 2/1966 Warthen l82l6 3,256,954 6/1966 Warthen 18216 REINALDO P. MACHADO, Primary Examiner US. Cl. X.R.

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