US1698508A

US1698508A - Putlog

Info

Publication number: US1698508A
Application number: US174205A
Authority: US
Inventors: Charles C Pimm
Original assignee: Individual
Current assignee: Individual
Priority date: 1927-03-10
Filing date: 1927-03-10
Publication date: 1929-01-08
Anticipated expiration: 1946-01-08

Description

mm a 1929. 1,6985% c. c. PIMM PU'I'LOG Fm march .10, 1927 Patented Jan. 8, 1929.

CHARLES C. PIMM 0F SOMERVILLE, MASSACHUSETTS.

- PUTLOG.

Application filed March 10, 1927. Serial No. 174,205

This invention relates to putlogs such as are employed as part of temporary scaffolding that is erected for use in working upon l)ll('l{ or masonry walls.

I t is an object of the invention to produce a putlog having the required strength and scaffolding apparatus to produce the putlogs 1 complete, including the usual wooden log or beam. and to ship these complete logs to-the purchasers. Naturally the freight and other expense of shipping complete logs from the factory to the purchaser is comparatively great. My invention provides a putlog anchor attachment which can be manufactured, sold and shipped to the purchaser, separately, the purchaser furnishing the wooden logs or beams himself and applying the attachment thereto. In this way my invention obviates the expense of shipping comparatively large and heavy wooden logs or beams and, therefore, the ultimate cost to the user or purchaser of the attachment to less than heretofore.

To these ends Iliave provided an improved putlog, and also, as a new article of manufacture, a putlog anchor attachment having the peculiar features of construction and arrangement of parts set forth in the following description, the novel features of the invention being particularly pointed out and de fined in the claims at the'close of the description.

In the accompanying drawings:

Figure 1 is a side elevation of a putlog having my new anchor attachment applied thereto, said putlog being shown as incorporated in a scaffolding and applied to a wall.

Figure 2 is a section on line 2-9 of Fig. 1.

Figure 3 is an end view of the putlog shown in Fig. 1.

Figure 4 is a detail hereinafter described.

Figure 5 illustrates the manner in which the putlog is applied to or removed from wall.

Having reference to the drawings, 1 represents the wooden log or joist constituting the body of my improved putlog, said body log posts 2 and ledgerboard 3 of the scaffolding;

At the inner end of the body log 1 I provide my new anchor attachment which comprises a rectangular metal collar 4 made of a size and shape to receive within it and snugly fit the end of the body log 1. This collar is conveniently made from a single strip of metal bent into the form of a rectangular collar comprising a bottom cross-bar 5, two

vertical sidebars

6, 6, and two inwardly extending

top bar sections

7, 7 providedat their inner ends with upstanding

parallel ears

8, 8 which are spaced apart to receive between them one end portion of a metal hook member 9 to which they are securely fastened by bolts 10. The opposite wall engaging end portion 11 of the member 9 is made at its eX treniity, and at its lower edge, with a depend ing prong 12 which makes of said end portion a hook to engage and interlock with the wall as shown in Fig. 1. Also, the lower edge of the hook 11 is made, adjacent collar 4, with a recess or notch as at 13. When inserting the book 11 into the brick work of the wall, or withdrawing the same therefrom, the putlog is usually canted more or less as shown in Fig. 5. and the purpose of'the notch or recess 13 is to prevent the lower edge of the hook from breaking down, or chipping, the corner 14 of the brick 15 immediately beneath the hook 11.

In the best form of my invention provision also made for positively locking or fastening the collar 4 in position upon the body log 1, and as herein shown this consists in forming the

side bars

6, 6 with holes or apertures 16 to receive nails 17 that are driven into the body log 1.

lVhen the putlog is incorporated in a scaf folding as shown in Fig. 1, it will be clear that the inner endof the body log 1 and its collar 4 are immediately adjacent the brick wall 18 by which the wall engaging hook arm 11 is supported so that twisting and shearing strains imposed upon the bolts 10 by the load on the putlog are reduced to the minimum. The end of the wood log, however, and not the edges of the metal 0011:1134 comes in. contact with the face of the brick and hence there is no possibility of injury of the face of the brick especially when as shown in Fig. 5, the act of inserting or removing the member,

9, brings a corner or edge of the putlog in rubbing contact with the face of the wall,

whichof course, were that edge the metal of the collar, would grind or scrape the face of the wall. In the preferred embodiment of my invention herein shown the member 1.- is made with a tail piece or extension 20 projecting outwardly beyond the collar 4 and engagmg the/top side of the log 1, which thereby effectually prevents the member 11 from pivoting or twisting on the rivets 10 under the influenceof the load carried by the putlog. The extension, 20, of the member, 9, since it engages the top of the log, 1, resists any tendency of the log, 1, to rock on the nalls, 17, as a pivot which would be apt to occur both from the weight or load on the log, 1, when the scaffolding is assembled and also during the act of applying the putlog, 2, and removing it from the wall, and of course, the leverage thus exerted would be consider able. Any play upon and rocking of the log, 1, on its nail connection with the collar would be apt to result in loosening the nails and causing the separation of the log from the collar with disastrous consequences.

From the above description it will be clear that a person having my new anchor attachment may quickly provide a complete utlog merely-by slid ng the collar 4 on to t e end of a body 10g 1 and driving the nails 17 and it will also be clear that the lumber used for the body log is not materially mutilated and can subsequently be used for other purposes. It will also be clear that the above described putlog attachment is of inexpensive and efficient construction and can be easily and quickly applied to a log or joist by an unskilledworkman. Also this attachment can be shipped separately by the manufacturer therof to users of putlogs who can make use of their own lumber in providing the body log to which the attachment is applied, thus avoiding the expense of shipping bulky and heavy logs with the attachment.

What I claim is:

1. A putlog anchor attachment comprising a hooked arm adapted to be inserted between two bricks of a wall and to rest upon and interlock with the brick beneath it, and pro vided between its ends with meansfor attaching it to a body log, which means extend above the top of the log and said arm extend- Y ing a substantial distance opposite its hooked end beyond said attaching means and resting on the top of the log.

2. A putlog anchor attachment comprising a hooked arm adapted to be inserted between two bricks of a wall and to rest upon and interlock with the brick beneath it, and provided between its ends with means for attaching it to a body log, which means extend above the top of the log and said arm extending a substantial distance opposite its hooked end beyond said attaching means and resting on the top of the log, said attaching means comprising a strip of metal that extends across the body log at the bottom and laps over the sides thereof, and the portion of the attaching means above the body log lying against and secured to the hooked arm. Signed at Boston, county of Suffolk, and State. of Massachusetts, February, 1927.

CHARLES C. PIMM.