US1580027A

US1580027A - Roof jack

Info

Publication number: US1580027A
Application number: US733620A
Authority: US
Inventors: Fagg Fredrick
Original assignee: Individual
Current assignee: Individual
Priority date: 1924-08-22
Filing date: 1924-08-22
Publication date: 1926-04-06
Anticipated expiration: 1943-04-06

Description

April e, 1926. 1,580,027

- F. FAGG ROOF JACK Filed August 22 1924 -2 Sheets-Sheet 1 glwu'nfo'c reel rich Fagg v April 6 1926.

' F. FAGG ROOF JACK Filed August 22, 1924 2 Sheets-Sheet g I gwuenfoz .fiedl'fi'cx Fagg Patented Apr. 6, 1926-.

UNITED STATES PATENTJOFAFICE.

rnnnniox FAGG, OF SPRINGFIELD, inssoun noon JACK,

'Applicatio n filed August 22, 1924. Serial No.1733,620.

, To all whom it may mm.

, lowing is a specification,

had therein to the accompanying draw ng.

ports to hold the platform in positions according to the pitch of the roof, thereby facilitating the laying of shingles. Anotherpurpose is to provide, in conunction with the base (which is preferably of wood) opposite edge bars of any suitable metal, preferably iron or steel, which are tion of'a roof, showing the improved roof bolted to'the opposite edges of the base, there being lugs on the edge bars projecting below the base and adapted to engage with the edges of the shingles to support the roof jack in position.

Still another purpose is to provide means,

. such as adjustable supporting bars, for the support of a platform I (which is hingedly mounted on'the base) in various positions according to the pitch of the roof, there being beveled ends adjacent the mounting of the bars causing projections to be formed which rest upon the shingles which have been applied, in order to incline the @base/ .relative to the face of the shingles to insure the lugs engaging more firmly with the upper edges of the shingles. I 1 A further purpose is the provision of a sub-base constructed of wood and which is especially used when laying asphalt roofing. In this connection, the sub base'isfastened detachably by suitable means to the main base and restsupon the asphalt, holding the main base out of contact with the surf-ace ofthe asphalt and thereby preventing the lugs on the edge bars and the extensions on the supporting bars from engaging with and cutting holes in the asphalt,

In using the {sub-base, theinvention includes a suspension rope or cable detachably connected to the platform with a hook at one end to engage with the rid roofto support the roof jack. 7 he rope or cable'is provided with a pluralityof rings, with any one of which a hookfon the platform" may engage to support the jack e of the indifferent positions between the ridge 'and thelower edge of thereof.

It is'apparent that the rope be used in conjunction'fwith the roof jack,

"in addition to the lugs on the edge bars,

when laying shingle roofs to insure against displacementof the roof jack. I

It is to be uiiderstoodthat the particulars ierein given are in no way limitative and that,jwhile still keeping within thescope of the invention, any desired modifications of detail and desired proportions may be made in the apparatus according to the circumstances. f g I The invention comprises set forth, shown in the drawings and claimed. 7

Inthe drawings:

Figure 1 is a view in perspective of a por- 0 further features and combinations of parts to be hereinafter or cable may jack applied in accordance with. the inven- Figure 5 is an enlarged detail perspective view of-the upper endsof the main and subbases andshowing a portion ofthe platform, more clearly detailing the construction.

Figure 6 is a view of the roof jack collapsed,

Figure ing the roof jack as supported on a hip roof.

Referring to the drawings, 1 designates the main base of the roof jack which is preferably constructed of wood, and fastened to the edges of the main base by bolts 2 and 3 are edge bars 4 of any suitable metal, preferablyiron. The bolt 3 also passes through the lower ends of'suppo'rting bars 5 providedwith a plurality ofopenings, or

7 is a detail perspective view showapertures 6. Certain of the registering apertures of these bars receive a bolt 7 (which engages'.'tlirougli metallic straps 8 on the underfa'ceof a platform 9) for the support of the'platform. I

The platform 9 is operatively connected to the base by means of a suitable hinge 10 of which an elongated tapered leaf is secured to the platform 9 while a rectangular leaf is secured to the main base, whereby the platform may be disposed in difierent posh tions. The platform is constructed of wood and engaging transversely through its hinged end is a bolt 11 whichls purposely applied for reinforcing the wood, in fact, preventing the wood from splitting.

The ends of the edg'e bars 4 adjacent the hinge of the platform have lugs 12 which are under-cut as shown and are designed to engage with the upper edge of the last row of shingles being laid to support the roof jack in position while laying an adjacent row of shingles. The supporting bars 5 beyond their pivots have beveled oti' extensions 14 which protrude beyond the base, the bevels 13 causing'sharpened extremities to be formed on the extensions, Which serve the purpose of holding the main base at an angle to the surfaces of the shingles which have been laid, the extremities of the extensions slightly biting into the shingles to insure against slipping. In holding the main base at an angle to the surfaces of the shingles, the lugs 12 are insured a firm engagement with the edges of the shingles.-

The roof jack includes a sub-base 15, preferably of wood, which is fastened to the under surface of the main base by any suitable means, preferably screws. It is obvious that the sub-base may be easily detached at any time to permit the main base to be used in conjunction with laying shingles. However, the sub-base is particularly adapted for use in connection with a roof jack when laying asphalt roofing. The sub-base serves the purpose of supporting the main base from engagement with the asphalt, thereby preventing the lugs 12 and the extensions 14 from engagement with and cutting holes in the asphalt.

The sub-base is of a width equal to the combined width of the main base and the edge bars, enabling the supporting bars 5 to be collapsed in engagement with the remote faces of the edge bars i, with the platform lying against the main base when the roof jack is not in use. In order to permit the sub-base to be attached to the main base and not interfere with the lugs 12, the upper corners of the sub-base have notches 16 with which the lugs 12 engage.

An eye olt 17 passes through the elongated tapered leaf of the hinge and is screwed into the platform, which is of wood, and a suspension rope or cable 18 is provided. This suspension rope or cable has at one end a hook l9'and is provided'with a plurality of rings 20, with any one of which the eye bolt 17 may engage to support-the roof jack in different positions on the roof, more especially when laying asphalt roof- However, it is possible to use the rope or cable in connection with the roof jack when laying shingles, in the event that the lugs 12 will not support the roof jack in the desired position and also to insure the prevention of the lugs disengaging from the edges of the shingles.

When the roof jack is not in use, it is possible to collapse the supporting bars 5 against the remote faces of the edge bars 4 and in this case the bolt 2 may be removed and inserted through certain of the registering apertures of the bars 5. hen the bars 5am so collapsed, the bolts 7 may be emloyed to engage through

apertures

6 and 21 of the edge bars 5 and i and transversely through the main base. When the roof jack n otin use and collapsed, the rope or cable may be tied aro'fnd the platform and the main base to hold the latter in such position.

As the roof progresses in construction, whether it is made of asphalt or of shingles, the roof jack may be adjusted accordingly.

The rope or cable is of special use in the construction of hip roofs and in this event, a suitable screw-eye 22 is fastened to the hip rafter and with which the hook at one end of the cable or rope engages.

The invention having been set forth, what is claimed is:

1. As an article of manufacture, a roofing jack consisting ofmain and sub-bases, the latter being detachably secured flatwise to the former and pro-videdwith corner notches at one end thereof, a platform hingedly connected to one end of the main base with means pivotally connected to the opposite end of the main base for supporting the platform in a horizontal position according to the pitch of the roof, and edge bars detachably carried by the opposite longitudinal edges of the main base and provided with projecting lugs at their ends adjacent the pivot, of the platform to enter the notches and overlie the edge walls of the notches.

2. As an article of manufacture, a roofing ack consisting of main and sub-bases, the latter being detachably fastened flatwis'e to the former, a platform pivoted to one end of the main base with bars detachably and adjustahly connected to the other end of the platform, the bars in turn being pivotally' connected to the opposite end of the mainbase, and edge bars detaehably fastened to the opposite longitudinal edges of the main base and provided with projecting lugs, the lugs of the edge bars actingto overlie the s end ed -e of the sub-base.

In testimony whereof he his signature.

F FAGG!