US2332477A

US2332477A - Wall scaffold

Info

Publication number: US2332477A
Application number: US429814A
Authority: US
Inventors: James R Thornley
Original assignee: Individual
Current assignee: Individual
Priority date: 1942-02-06
Filing date: 1942-02-06
Publication date: 1943-10-19
Anticipated expiration: 1960-10-19

Description

Oct. 19, 1943. J. R. THORNLEY 2,332,477

WALL SCAFFOLD Filed Feb. 6, 1942 2 Sheets-Sheet 1 Patented Oct. 19, 1943 a UNITED: STATES" WALL SCAF-FOLD iames R. Thornley, Fall-River Maiss- 1 Application February 6,1942, Serial No. 429,814

1 "'1 Claims. (01. 204-14 The present invention relates to improvements in wall scaffolds. r

The primary object of theinvention is to pro vide a scaffold capable of being attached to a wall or other supporting surface to provide a safe and rigid structure which will not pull away from the wall under strains and stresses and thereby cause serious accidents to workmen during construction operations 1 L A further object of the invention is to provide a scaffold of the above mentioned character capable of being erected by one man, thereby eliminating the necessityof employing large numbers of workmen on construction jobs of a relatively simple nature.

A still further object of the invention is to provide a scaffold jack adapted to be attached toa wall for supporting a scafioldrunway or platform which may be assembled and knocked. down in a minimum amount of time and which may be com-' pacted to facilitate easy transportation during transit from one construction job to another.

A still further object of the invention is to probeams of thesc'afiold;

vide a guard rail for axscaffold structure of the i above mentioned character which is capable .of being assembled relative to the scafiold jack in a unique manner to prevent workmen and material from sliding or slipping off of thescaffold platform and causing serious damage to both life and material.

A still further object of the invention is to rcwill become apparent during the following description of the accompanying drawings wherein:

Figure 1 is a vertical side elevational view of the scaffold jack and guard rail illustrating in detail the manner in which the same is attached to and supported by a wall;

Figure 2 is a perspective view' of the scafiold' jack showing the same in position prior to its attachment to a wall surface and showing the manner in which the strut is extended and held in position; I

Figure 3 is a perspective view of one of the guard rail supporting posts illustrating in'detail the construction thereof; I

' Figure 4 is a vertical cross sectional view taken on line 4-4 of Figure 1 looking in the direction a ofthe arrows and illustrating themanner in clearly in Figure l. a V

which the guard rails areanchoredto therail Figure 5 is a vertical cross sectional'view taken on line 5-5 of Figurel lookingin the direction of the arrows'and showing a wall abutting member'attached to one of the plank supporting Figure 6 is a horizontal'cross sectional View taken on line 6--6 of Figure 1 looking in the direction of the arrows and illustrating in detail the connection between the anchoring rod and guard rail post; Figure 7 is a horizontal cross sectional view taken on line 'I,1 of Figure 1 showing the manner in which the planking supporting beam is attached to a wall surface; I

Figure 8 is a vertical cross sectional view taken 7 vertical guardrail posts and,

Figure 9 is a perspective view showing the wall abutting member in exploded relationship with the inner end'of one of the planking supporting beams. v a I In' the drawingawherein for the purpose of illustrating the invention and wherein likereference characters will be employed to designate like parts throughout the same, the reference 1 character ill will generally be employedto designate a scafiold jackadapted to be attached to a wall surface" W such'as planking ported by studding S. v

The scaffold jack l0 comprises a platform supporting beam H formed of a length of angle iron providing walls I2 and I3 at right angle'sto each or siding s'upother. The inner end of the beam ll has one of' l its walls cut away as at I4 to provide an end portion i5 bent as at IS. The end portion I5 is provided with a square opening H for allowing the passage of an anchoring 'rod [8 having one of its ends squared as at l9 and its extreme free end bent upwardly as at 20. The extreme free I end projects through the square opening ll in the end member-I5 and. is adapted to project, through a bore hole B in the wall W as is shown Inter-posed between the end member l5 and the wall surface W is a transverse angle plate 2| having a squared opening '22 corresponding in shape and dimensions to the squared opening ll in the end member l5. The angle plate 2| may be welded or otherwise secured to the inner end of the beam I I so thatthe angle plate 2 I will engage the wall surface and prevent side slipping or swinging of the free end of the beam.

Pivotally secured to the side. wall I 2 of the platform supporting beam is a strut bar 23 formed of an angle iron having its ends beveled as at 24 and 25. The strut bar 23 is held in place by a suitable pivot pin, clearly shown in Figure 1.

Secured to the opposite end of the strut bar 23 is a link 21 pivoted to the strut bar at one end as at 28 and having its opposite end attached to a similar link 29 as at 30. The link 29 is pivoted as at 3| to the side wall l2 of the platform supporting beam adjacent the inner end to allow the strut 23 to be folded into parallel relatiornship with the beam H. The link 29 is shorter than the link 21 to compensate fo'r the diflerence in the toltal link length when the strut'is folded during transit.

The extreme free end of the anchoring rod I8 is threaded as at IBa and extends through an angularly bent end wall 32 in the outer end of the platform supporting beam II. The end wall 32 is formed as an extension 'of the top wall [3 of the angle beam H similar to the end wall I in abutting relationship with the angle plate 2|.

Attached to the free endof the angle beam l I is a tubular guard rails post having an angular portion 35 at the lower end thereof providing ,a

socket 3G forreceivingthe free end of the platform supporting beam 1 I. One end of the socket 36 is provided with an aperture 31 for allowing the projection of the screw threaded portion 18a of the anchoring rod l8 so that a wing nut 38 may beat tached thereto to lockthe beam II to the wall W and to lock the guard rail post 34 against displacement. 1

Suitable platform planking 39 may be supported by a series of the scaffold jacks arranged in alignment along the side wall of a building being constructed or repaired. Guard rails!!! may be attached to the guard rail posts 34 and the overlapping portions or ends of the guard rails may be anchored to the guard rail posts by means of angular locking bolts 4| the shanks,

of which as at 42 are squared and are adapted to extend through squared openings 43 in the guard rail post 34 so that a locking wing-nut =44 may be threaded on the free screw threaded ends 45 of the shanks .42.

the platform planking 3!]. After the jacks are placed in position the guard rail posts 34 may be secured thereto by attaching the same to the anchoringrods l8. When the scaffold jacks lll,

and guard rail posts 34 are thus inposition, the planking 39 and guard rails 40 maybe attached to the scaffold jacks I and guard rails posts respectively.

The anchor rod I8 is frictionally retarded- ,against longitudinal sliding movement by means of a leaf spring 50, having one of its ends'as at 5!, welded or otherwise attached to the under- .sideof the platform beam I. The free end 52 'of the leaf spring-is in sliding frictional engage ment' with the squared portion 1-!) of the anchor rod,- so that when the beam H is tilted during assemblage, the "hooked "end of the anchor rod will not pinch-the fingers of the workmen while assembling or knocking down the scaffold;

It is to be understood, that the form of the invention herewith shown and described is to be taken as a preferred embodiment of the same and that various changes in the shape, size and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

I claim:

1. A wall scaffold comprising a horizontal supportingxbeam, an anchor rod extending longitudinally of the beam having a hooked end for engaging a wall surface, a guard rail post having a socket portion and its lower end received on the supporting beam and held in place by the anchor rod and guard rails supported by said guard rail post.

'2. A wall scaffold comprising a horizontal supporting beam adapted to be attached to a wall, a wall abutting member secured to said beam, an anchor rod extending longitudinally of the beam and supported thereby, a hooked end formed on the anchor rod adapted to interlock with the wall, a strut carried by the beam adapted to engage the wall at a point beneath the interlo'cking connection between the beam and wall and a guard rail post 'detachably secured to the opposite end 'of the beam and held in place by the anchor rod.

3. A wall scaffold comprising a platform supporting beam having a transverse wall abutting member, a strut pivoted to the beam for reinforcing and supporting the free end thereof, an anchor rod slid-ably 'carried'by the beam having one of its ends projecting through the abutting member and through the wall in interlocking engagement therewith, a guard rail post detachab'ly secured to the free end of the beam adapted to be held in place by the anchor rod and guard rails removably attached to the guard rail post. "4. A wall scaffold comprising a horizontal beam adapted to be attached to a vertical wall surface, a strut pivoted to the free end of the beam for supporting the same, linkslconnecting the inner end 'o'f'the beam to the strut to limit the movementof the strut, an anchor rod slidably carried by the beam having a hooked end adapted to engage and interlock with the verti- J calwall surface, a guard rail post 'removably secured to the freeren'd of the beam adapted to be held in place by the anchor rod and :guard rails clamped to t'herguard rail post.

5. A-wall scaffold comprising a series of scaffold jacks adaptedtoqbe attached to a wall in :hOTiZUIltfil alignment, each of said jacks comprising a horizontal beam having a wall abut-ting member at oneend thereof, a wall engaging strut pivoted adjacent the freeiend of the beam, links limiting the swinging movement of the strut connectedbetween the :inner end of the beam guard rail posts and adapted ,to be clamped thereto. l l

6. A wall scaffold comprising a series :of'scaf- "fold jacks attached to a vertical wall surface in --ho rizontal alignment, each jack comprising a horizontal beam having a wall abutting memher at one end thereof, a strut for each beam pivoted acent the free end thereof, links connectingthe beam and strutfor limiting the swinging movement thereof, an anchor rod extending longitudinally of and slidably carried by each beam, a guard rail post removably secured to the free end of each beam adapted to be held in position bythe anchor rod and guard rails spanning the guard rail posts adapted to be clamped into looking engagement therewith.

'7. A scaffold jack comprising a platform supporting beam of angular cross-section, an adtion of said slide rod, means between said beam andsaid hooked end for preventing side slipping or swinging ofth'e free end of the beam, a nut mounted on the threaded end of said rod to clamp said beam, side slipping preventing means andhooked end against'the wall surface, a truss v platform supporting beam to limit the swinging justable slide rod carried by the beam having a 10 movement of the truss bar.

hooked end for engaging within an opening in a vertical wall surface, means preventing rota- JAMES R. THORNLEY.