US1516971A - Putlog - Google Patents

Description

Nov. 25, 1924.

T. H. KINGSTON PUTLOG Filed Dec. 19, 192?.

Patented Nov. 25, 1924.

UNITED STATES 1,516,971 PATENT OFFICE.

THOMAS H. KINGSTON, OF WEST SOMERVILLE, MASSACHUSETTS.

PUTLOG.

`iippiicatimki'11n-.a December 1e, 1922. serial No. 607,869..

Itis an object of the invention to producel a putlog having the required strength and durability, yet simple in structure and easily manipulated.

It is a further object of the invent-ion to combinev with the above qualities, another one of safety infuse, and to this end, the

anchor plate-is so arranged as to be temporarily secured to-the wall by the ycement lor-othertbinding material used,wfhich with'- -out special effort fon'the part of the; workman, nds itsway tothe anchor plateand lodgesabout it in such, manner that when uit hardens an veectual securing-means is providedl- 3 1 Anotherobject'of 'theinvention isA to so shape the anchor plate`that it *mayv be 'readily' adjusted for use, 4and when; its

service forfthe particular work has ended,

it maybe readily dislodged from its temporary security without undue` effort or exertion on the part o-f the user'.v

Heretofore putlogs have been used wherein the anchor plate had a depending hook or lug, -which was adapted -to engage the inner side of the brick, or stone, upon which the plate rested; such as shown in patent granted to me November 4, 1913, 4No.

' 1,077,839. This device has been widely used V.with great success, but linstances have been noted wherein diiiculty has been met in .dislodging the anchor plate from its seat without breaking off the hook or defacing the brick or stone in an effort to free the hook, so that the plate-may be withdrawn. It is an object of the present inventionto dispense with. such lugs or hooks because of the above mentioned reason, and to provide `a plate which is vso shaped. as-topjbe temporarily locked in place by the hardening of the binding material which falls thereon during the process of laying Ithe i ing ,a-rocker like lower edge Y16, and adaptnext tier of brick or lstone above it.

. The present invention further provides a plate-of such construction, that intentional dislodgment thereof is greatly facilitated by a lifting and lowering movement of the outer endof -the-putlog, which rocks the plate, causing it to loosen the binding-material, previously holding it in place, so that the putlog may be removed from its Operative position by one hand of the workman. f

The invention further consists incertain features of construction and arrangement .Whichwill be fully understood from a description ofthe drawings and the claims hereinafter given. f

Of the drawings:

Figure 1 represents in top plan view a portion of a brick wall in course of construction, showing ,.awell known type of scaffolding in which the present invention is included.

" Figure 2-a perspective view showing the means of supporting the outerends of the putlogs.

' Figure 3-'a part side elevation of a putg; log shown ,in operative position.

Figure 4-a Vview showing the inner end ofthe putlogin a position it may be made to assume when the log. is to be removed Vfrom the wall.

Figure 5 -a part top plan view of the anchor plate end of the put-log sho-wn in Figure 3.

Like characters represent like parts throughout the several figures of the draw- 1ng.

The putlog 10 shown herein `made pref- 'erably of wood or equally strongbut light materiahhas a slot 11 at the left end thereof to receive a blade like plate 12, having an extension 13 which will be hereinafter referred to as an anchor plate.

The said plate 12, being suitably secured in said log 10, as for instance-by the rivets 14 and 15, the latter of which pass through a U .shaped reinforcingstirrup, 14X, which has the additional rivets 15.X securing it to the log.

In practise, the stirrup will be positioned in such manner, that whenv the. log is tilted as in Figure 4, it will not contact with the wall, but the end yof the log may be, if desired, fulcrumed on the wall as an aid vin dislodging the plate 13.

The plate v13 is of novel construction, havit is preferable.

-or stones in the erection of a .wal-l `or the like. v v f In applying the pu-tlo-g to use, the anchor plate will be placed in -a crevice most convenient for the purpose, in the then last courseof brick or' stone, with the log l() vresting on the usual ledger board 19, fast with the upright 20, to which the. said log is preferably secured by a spike or other mean-s 21.

The next course of brick or stone will now be laid, during which operation, the binding material used will find its Way into the plate occupied crevice, either by design or incidental to the operation, in suicient quantity tofforin a somewhat wedge shaped stop mea-ns between the end of the beak .18, and the louter surface of thefbrick as indicated at 22, see Figure 3.

Y Morey or less of the binding material will `find its vway to thepoints 23 andi 211 but it' is not essential that this shall occur, although As this binding rmaterial requires but a short time in which toset,- it will bel readily vseen that an effective lock has been forme-d which is capable of resisting ordinary efforts to dislodge the plate 13, particularly when said efforts are exerted in the direction oflength of the putlog.V

lIn the dismantling process, the'woi'kinen engaged therein are placed at a disadvantage when the removal of the putlogs take-s place. rlhe footing aifordech'is mea-gre, consisting of the ,ledger board, and consequently one@ hand is used in holding onto thelupright, while. with'the other, the putlog must be dislodged from its restingplace.

It is at this time that the novel shape of tlie'anclior plate, particularly its adaptability to be rocked, lendsitsaid to the workman.` f

The log may-be grasped by the free hand at any convenient place adjacent thefend thereof, and lifted slightly and lowered again; these operations being repeated ya number of times, or suiiiciently to loosen the nowl hardened binding material so as to bi'eakits platelocking effect and enable the :plate to be removed from the crevice.

Ordinarily the yabove movements will suffice to loosen the'plateJ so that it may be withdrawn, but if not, the log may be raised suilicieiitly to abutthe wall where it will be 'fulcrunied, thereby adding effective leverage to assist in starting the plate fromts restiiigrplace in theerevice; i

It isV obvious that the shape of the plate 13 may be eliaiigedso long, as its top and bottom edges aie so arranged'as to permit the plate to be rocked, 'and so long as the top edge is so shaped as to forni a depression into which binding material will find lodgment, to thereby prevent the portion of said r fis equally applicableV to the 'typeof zpi'itlog 'shown and described linthe aforreme-ntioi'ied patent, an indication of which vissshown-in Figure 1 ofthe drawing' herewith.

l-aving described f the invention I claim l' 1f. JA l putlogi' having 'a thin metallic extension permanently secured rtliereteV `and adaptedtofbe received in a-crevice between adjacentbuilding elementsf, andfto beLrocked 1in unison with said logffor the npurpose of releasing it from a crevice, oneed'geioflfsaid extension being curved to forni a rocker,

and another edge having an appreciable sheer terminating abruptly attheendof the said putlog,.said edges converging toward' v lthe free: end of said' extension therebyforming a beak haviiigifangular relationjte the main body of said extension, whereby -an anchor isi provided, vvadaptedto Scoact'with binding material Vto retain 4vsaid .putlo'gin c position against outward` :longitudinal movement, the end of said putlog adjacent said extension being so arranged with re- Aspectto the said extension as to fulcrum on l Ot) the. face of a` wallwhen 'said -piitlog and eX- tension are to be ro'cked'to"diseififgage` said extension from a crevice.

2. A putlog comprising aibar having-a relatively thin metallic wallI engagingA ine-inber. permanently secured theretoat one end thereof, said member extending from.k a contini-ng slot formedin said ban at the lower edge thereof in suoli manner lasto'fprovide a wall engaging fulcrum abovesaidnieniber for use when disengaging said" member from a wall, the extending portion of'said ymember being-'adapted to be received iii .ya

ci'evice'between adjacent building elements,

vthe loweredge of said member being de- :fned by a lcompound curve wherebylitniay berocked' to -free itself from the 'said crevice, and to form a--clearancebetweenit and the front I edge ofl the building element `i upon which it'may rest to prevent contact therebetween, in combination with a ledger board l adapted to support the outer end of said bar, and an upright to which said bar is adapted to be secured.

3. A putlog havingI an end adapted to be positioned in close proximity to the face of a wall and to at times fulcrum thereon, and an anchor member comprising a metallic plate fast to said putlog at the said end thereof and extending therefrom, and having its lower edge curved to form a rocker and having an upwardly extending beak adapted to coact with binding material to retain said putlog in position against longitudinal outward movement, and being removable therefrom by rocking movements of said putlog, and attached plate, whereby the end of said putlog may be fulcrumed on the face of a wall to thereby aid in the removal of said plate.

4. A putlog having fast therewith a rocker shaped plate adapted to be received in a crevice between adjacent building elements and to be retained therein against longitudinal outward movement by binding material, said putlog and attached plate being of an arrangement whereby upward rocking movements thereof may cause said putlog to fulcrum against the face of a wall to thereby aid in the removal of said plate from its position in a crevice.

Signed by me at Boston, Mass., this 14th day of December, 1922.

THOMASv H. KINGSTON.

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