US2585763A

US2585763A - Portable scaffold

Info

Publication number: US2585763A
Application number: US33476A
Authority: US
Inventors: Leonard C Gasner; Claude M Page
Original assignee: GASNER
Current assignee: GASNER
Priority date: 1948-06-17
Filing date: 1948-06-17
Publication date: 1952-02-12
Anticipated expiration: 1969-02-12

Description

Feb. 12, 1952 L, c, GASNER Er 2,585,763

PORTABLE SCAFFOLD Filed June 17, 1948 2 SHEETS-SHEET l Fig.2.

Inventors Leonard 6. Game! Claude M. Page I WWW 1952 L. c. GASNER ETAL ,5

PORTABLE SCAFFOLD 2 SHEETSSHEET 2 Filed June 17, 1948 Inventors Leonard 6. Gasner E 3 Claude M. Page WWW Patented Feb. 12, 1952 Leonard J. Gasner and olaiiaelml rage,- ohica a, Ill.; said Page assig'nor to said Gasner Application June 17, 1948', Serial No. 33,476

This invention relates to improvements in scaifolds and is directed to portable and adjust- .ablescaffolds and is especially adapted to be employed in painting box cars, although the use thereof is not so limited, being equally capable of use in building maintenance, construction work, or aircraft repair, and a primary object or the invention is to provide "a'i devioethat is capable of'being readily transported from place toplacel the heightthereof being rapidly adjusted to work conditions.

Another object of the invention is to provide a device that is light, strong, flexible and sturdy, to eliminate the hazards of hastily built and temporary structures, where work is performed under precarious conditions.

A further object of the invention is to provide a scafiold that is quickly put together and dismantled, when needed and is compact in construction to occupy but little storage space when not being used.

And a further object of the invention is to provide means for retracting the rollers that enable the scaffold to be moved about so that the device now rests firmly on the ground and thereby eliminates danger of undesired movement while vigorous work is being performed upon it.

The invention accordingly comprises the features of construction, combinations of elements and arrangements of parts which are exemplified in the description hereinafter in connection with the accompanying drawings, and the scope of the application of which will be indicated in the following claim.

In the accompanying drawings, in which is illustrated one of the various possible embodiments of the invention:

Figure 1 is a side elevation of the scaffold;

Figure 2 is a horizontal view taken substantially on the line 2-2 of Figure 1 Figure 3 is a top plan view of the invention;

Figure 4 is an end elevation of the invention; and

Figure 5 is a perspective, fragmentary detail of the pivot means for placing the rollers into operative position.

Referring to the figures, the scaffold of the invention is identified generally by numeral l6 and supports a work platform l2 on the upper extremity thereof.

Platform l2 rests on three pairs of rectangular blocks or stationary supports [4 when work is to be per-formed upon it. Of course, the total number of supports may vary, as may be de- 1 Claim. (01.28

siredythe number having beenfound to represent ideal conditions. Secured vertically tolb10cks14are tubular-sleeves or casings l6,

sleeves l6 mounting the retractible members, as will presently appear, and provide the means for adjusting platform 12 vertically. Sleeves l6 are of hollow construction and receive slidably therein platform support rods 18. Rods l.8 are transversely slotted adjacentthe bottom thereof at 20, (Figure 1) .and receive therein retaining pins 22 (Figure 2) when =in'adjustedposition. Pin 22 is secured by a chain 24 to cross bar 26 extending transversely between each pair .of standards or sleeves l6. This is done in order to prevent possible loss of pin 22 when the scaffold has been dismantled for storage, or while it is being adjusted vertically. Standards l6 are apertured at 28 along the vertical length thereof whereby it is adapted to receive pin 22 in various positions of adjustment.

Rollers or casters 30, of which there are a total of six, as may be readily seen from Figure 2, are the means whereby the scaffold is transported from place to place, as desired. Casters 30 are arranged in pairs and are mounted transversely by shafts 32, shafts 32 also mounting yokes 34. Yokes 34 are secured, for each pair of casters 30 to

short links

36, 38 and 40, for a purpose soon to become apparent. As may best be seen in Figure 4, an inverted U-brace 42 is secured to shaft 32 and retains a plate 44 thereon, plate 44 engaging a second similar plate 46.

Plate 46 retains tubular caster bracket 48 and is pivoted for movement by means of pivot rod 50. It will be noted that casters 36 are adapted to extend slightly below blocks I4 when in vertical position. Handle 52 including hand grip 54, is pivotally secured at 56 by means of yoke 34 to casters 36 at one end thereof and is secured as by chain 58 to one end of link 36. Link 36 is pivoted at the opposite end thereof to pivot bar 60, bar 60 being of sufficient length to pivotally connect to the adjacent end of link 38. Link 38 is, in turn, secured to pivot bar 62, bar 62 being of similar construction to bar 66, and pivotally secured to the near end of link 46. Link 40 is integrally secured to the upper extremity of caster brackets 48. Thus, when handle 52 is actuated, by pivoting it forwardly, chain 58 will exert pull on link 36, causing the attached caster wheel 30 to pivot on pivot rod 50 into vertical position. This action moves bar 60 to move link 38 into horizontal position and therewith attach caster wheel 30, and in turn actuate bar 62 for similar movement of link 10. In this manner, scaffold I is elevated from rest position on blocks l4 and the device is ready to be transported.

Cross braces 64 are securedto the upper and 2,585,763 Ii-t slot therethrough and a lower end, a wheel having an axle rotatably supported on said lower end of said bracket, a short link secured in the slot of each of said brackets and extending latlower extremities of standards 16 and 66 and f 5 erally therefrom, a first longitudinal bar terserve to strength the device and avoid shifting laterally thereon. Transverse braces 68 serve a similar function.

Ladderlfl issecured' medially of scaffold [0,

at eaclr side therofa'nd terminates on platform I2 to be secured thereto by retaining bars 12.

Transverse bar 14 is welded across to each lad der 10 and serves to retain it in rigidposition: at all times. Angle brackets 16 and braces 18 retain platform I2 on rods-i1 8 am in fixed po'si 5 tion. r

' Any suitable material may. be employed as; is desired. It is, of course, to be understood that the details of structure and arrangement of parts may be variously changed and modified 20 without; departing; from" the-spirit and scope of the -inventicna V, V V l. Has'ingu thus described the invention what is L ma portable soaffold havingean elon atedplat form) a==frame carryingisai'd platform and including 'vertical l'yb adjustablefirst and-' second end supports and aflvertical-lyaadjustable-a'central sup.-

port-a transverse rodz pivotedupon each =of:said

gl fi, a tubu'laf bra'cket securedto -:each rod, said bracket having ari upper=endwith an axial minally pivoted to the short links carried by the brackets associated with the first end and central supports, a second longitudinal link terminal'l'y"pivotd*to the sl'iort links earned by the bracketsa sso'ciatd with the central'an'ii second end supports, an elongated handle having a lower end rotatable on one of said end wheel axlgs,-and a flexible connection secured between said handle and the short link on the bracket supporting said-'one end wheel whereby manual operation'of said handle will urge all the wheels inunison to engage the ground and raise the supports therefrom.

' LEONARD C. GASNER.

CLAUDE M. PAGE.

I v REF RENCEsCiTE DQ 'riie fll'owing references are of reord' in the file of this-patent 1 Y Q T D TE A E N "I Number Name c 827,966 Flakemiii i-Aug; 7 1996 2,033,192" E1lis-. Marl 10;.11936 2,062,473.:

Norton Dec;