US532005A - Laughlin - Google Patents

Description

(No Model.)

A. B. MGLAUGHLIN.

DEVICE POR SUPPORTING AND LOWEEING CENTERS EUR TLE ARCHES.

No. 532,005. Patented Jan. 1,1895.

Vl f wf VW l 4 l gi/7- jl A /l UNITED STATES PATENT ALEXANDER B. MCLAUGI-ILIN, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONF.- TI-IIRD TO WALTER E. SUMMERS, OF SAME PLACE.

DEVICE FOR SUPPORTING AND LOWERING CENTERS FOR TELE-ARCHES.

SPECIFICATION forming part of Letters Patent No. 532,005, dated January 1, 1895.

Application led October 8,1894. Serial No. 525.33@ (N model.)

To aZ whom t may concern:

Be it known that I, ALEXANDER B. Mo- LAUGHLIN, a citizen of the United States, residing at Chicago, county of Cook, State ot' Illinois,have invented a certain new and useful Improvement in a Device for Supporting and Lowering Centers for Tile-Arches; and I declare the following to be afull, clear, and exact description ot the invention, such as will 1o enable others skilled in the art to which it appertains to mal-:e and use the same, reference being had to the accompanying drawings, which form a part of this specication.

My invention is designed to provide improved means for supporting and lowering centers for tile arches and has for its object improved devices for this purpose whereby the tiles in an arch may be filled in completely and for doing away with the necessity zo of keying up the arch after the center has been lowered.

Another object of my invention is to do away with the obstructions heretofore common in the way of laying the tile, my invention enabling the workmen to do better and quicker work and to do their work more con veniently.

To these ends my invention consists of the construction, combination, and arrangement 3o of devices and appliances hereinafter described and claimed, and illustrated in the accompanying drawings in connection therewith, in which- Figure l is a partial vertical section, show- 3 5 ing parts in elevatiomof portions of a building. Fig. 2 is a det-ail sectional view illustrating the old method and means of laying tile arches, heretofore used. Fig. 3 is a detail view of a portion of an arch at right angies to the section shown in Fig. l. Fig. eis

a plan view of Fig. l. Fig. 5 denotes a suitable lever employed in detaching certain portions of the device as hereinafter explained.

In Figs. l and e I have illustrated my device in connection with two adjacent stories or iloors of a building.

A denotes the customary horizontal steel I-beams commonly employed in buildings where tile iioors or arches are employed. 5o A denotes the vertical beams.

B denotes individual iiles of which the arch is constructed.

C denotes what is termed a center upon which the tiles are supported while the arch is being laid and keyed up. These centers are constructed in the ordinary manner, and consist usually of wooden ledgers D, shown in dotted lines, Fig. 4, with their ends projecting. rlhese ledgers are commonly formed of two pieces of timber d, d', spaced apart, form- 6o ing a passage way, shown at (Z2 therebetween. Upon these ledgers planks D' are laid for supporting the tile while being laid thereupon.

To more fully understand my improved devices for supporting tile centers While the arch is being laid, and for lowering the centers after the arch has been completed, I have shown in Fig. 2 the old devices and method heretofore commonly employed, consisting 7o of a ledger F. laid at right angles to the ledger D and adjacent to the arch to be laid.

In Fig. 2 the center C is shown supported adjacent to the base of the I-beams A, while the ledger E is supported upon the top of the same I-beams, customarily with a block of brick or other suitable material shown in Fig.

2 at F. To work the tiles adjacent to the ledger E, it is necessary to elevate them a suitable distance above the adjacent I-beams 8o A, requiring one or more bricks or blocks F upon said I-beams underneath the ledger E.

The centers C have heretofore commonly been supported by means of rods G provided at their lower ends with hooked or flanged plates G engaged underneath the ledger D, the bolt G passing upward through the channel d2 between adjacent planks and through the ledger E, a nut Gr2 serving to tighten the rod Gin place, a washer g usually intervening 9o between theledgerE and the nutG2. It will be observed that the ledger E is located adjacent to the arch to be laid and near its upper surface. The ledgers E so located adjacent to the arch are very much in the way of the workmen in seriously impeding their 'work and rendering it laborious and slow to place the tile in position adjacent thereto. The ledgers E being located adjacent to the arch to be laid have thus been heretofore a conroo stant obstruction in the way of the workmen.

, To lower this center, as heretofore commonly ysupported and arranged, it has been customnecessaryfto leave out a key from the arch adjacent yto the bolts G, commonly four in number, to support an individual tile center. After the center has been lowered away, the workmen must then return tothe arch to insert the omitted key tiles from the arch. The

omission of the'keys until thecenters werey lowered away, necessarily left the adjacent tile in a position liable toy displacement, as Vthey were liable to be easily slipped out of position and to fall throughif stepped upon, in

f which ycase it became necessary toraise a tile center underneath to put the displaced tiley 73o back intoposition. This liability ofV portions 'of the tile adjacent to the omittedfkey being slipped out of place and the consequent necessity of their replacement, together with the obstructionsin the way of the workmen, heretofore common, have rendered it very desirable that these differences should be overcome, and I will now proceed to describe how my improved appliances very effectually overcomethese differences and hinderances whereby the former obstructions may be done away with in laying the tile and whereby the keying up of the arch after the center has been lowered away, is no longer required.

I carry out my invention as follows: The center C is constructed in the usual manner. Instead, however, of locating the supporting ledgers adjacent to the top of the I-beams between which the tile are to be laid, I carry supporting ledgers, which I have indicated at D2, to the ioor or story above that on which the arch is to be laid, as indicated in Figs. l and 4. Instead of rods G heretofore commonly used, engaged with the ledgers D, I employ a rod H provided with a hanged plate or base H engaging the lower edges of the ledger D, the rod H being, say, an inch and a quarter in diameter, or of suitable dimensions, a nut h on its lower end holding the plate H in position. The rod H, toward its upper end and above the completed arch, is cut away, as shown at h', to form a shoulder thereabove, as shown at h2. To form this shoulder, the rod H may simply be recessed annularly a slight distance. Above the shoulder h2 the rod H is threaded, as shown at h3. Upon the upper end of the rod H, I engage any suitable connecting device having a screw threaded connection therewith. Thefrod H at the left hand in Fig. lr is shown engaged at its upper end by a head-piece .I having an eye, as at j, at its upper end. K denotes an additional rod threadedy at its upper end and engaged with the ledger D2 located at the story above Y the arch to be laid,the rod Kbcing provided at its upper end with a nut la. A chain L is shown at the left hand in Fig.fl connecting therod K with the head-piece J, the lower end of Vthe kchain beingformed with a hook engaged in the eye j. At the right hand in Fig. l, insteadof connecting the rods H and K by meansof a chain' L and a head-piece J,

I 'have shown a turn-buckle M engaged at its. extremities with the adjacent extremities of ythe rods H and K.

' f N denotes a lever of' suitable construction to engage the shouldered portion ofthe bars H. As shown, the'lever N is constructed with a fork n at one end to,` engage the rod H at the recessed portion h thereof, the fork n engaging under they shoulderh-"In klaying ythe arch, the tiles B are laid directly up against the rod H, the keys all being laid in place, it

beingy unnecessary to omit any tiley or keys in f order to lower away the center. When the arch has been kwholly completed and the workmen are ready tolower away the center, the

implements N are engaged with the shoulders v h2 of the yrods H by means of which the centers ymay be supported while the'devices con- Y necting the yba-rs H and K areseparated from the barsH ordetachedV therefrom. f Y

When a'chaimas shown at the left hand in Fig. l at L, is employed as a connecting device, its lower end may be unhooked from the eye of the head-piece J, the bar H being supported in position by means of the implement N. With the head-piece J is engaged a rope or cable P by means of which the workmen may lower the center. It will be observed that the head-piece J is of the same diameter as that of the body of bar H so as to pass through the orifice in the arch occupied by the bar. It will be understood that ordinarily four bars H are employed to support a center, as shown in Fig. 4, although they maybe of any required number. In this case, the four bars H are supported by means ot the levers N as hereinbefore described, while the bars K are detached therefrom, after which by means of the ropes or cables P attached to the head-pieces J the centers are lowered away.

In case turn-buckles or analogous devices are employed to connect the bars H and K, when the bar H has been disconnected therefrom, a rope with a head-piece .I attached thereto is secured upon the upper end of the rod H whereby the center may be lowered away as above described. It will thus be perceived that the arch is fully completed, no keys or tiles being omitted before the center is lowered away. Theoritice occupied by the bar H may be filled in by the plasterer. There is thus no liability whatsoever of the displace- IOO IIO

ment of any of the keys or tiles of the arch after the center has been lowered away. At the same time the supporting cross pieces or ledgers D2 being located on the I-beams at the story or floor above that on which the arch is to be laid carries said supporting led gers or cross pieces up above and entirely out of the way of the Workmen so that they are unimpeded and unobstructed thereby in their work, in consequence of which they are enabled to work much more rapidly and more efficiently, thereby enabling them to do a better job and in much less time than has heretofore been possible. There is in this way no keying up of said arch to be done after the center is lowered away therefrom.

Instead of employing a nut h on the lower end of the rod H, said rod may be rivet-headed.

lVhere a turn-buckle M is employed, it will be convenient to coil the rope once or twice therethrough to facilitate the lowering of the center, as the center is usually too heavy to be lowered by a straight hold upon the rope. In place of making the shoulder h2 integral with the rod H, a nut might be run down upon the rod to answer the same purpose.

It will be understood, as hereinbefore explained, that in the old method it has been necessary to leave out certain portions of the tile in order to provide room for lowering the old fashioned hook through the arch and between the members d, d of the ledger D. Moreover, when such a space has been left by the omission of a tile the space is liable to come over one of the separating blocks, shown at Q, Fig. 4, in which case it has been necessary to take out more of the tile to give opportunity to lower down the old fashioned hook between the members d and d to engage the ledger D.

W'hat I claim as my invention isl. In a device for supportingr and lowering centers for laying tile arches, the combination of the ledgers D, the ledgers D2, rods H engaged with the ledgers D, the rods K engaged with the ledgers D? and having removable connections with the rods H respectively, substantially as set forth.

2. In a device for supporting and lowering centers for laying tile arches, the combination of the ledgers D, the ledgers D2, rods H engaged with the ledgers D, the rods K engaged with the ledgers D`2 and having removable connections with the rods H respectively and means to support the rods H in disconnecting the rods K therefrom, substantially as set forth.

3. In a device for supporting and lowering centers for laying tile arches, the combination of ledgers D to support the arch, theA rods H engaged therewith at their lower ends' and extending through the completed arch, and means to engage the upper ends of said rods to lower the center, said rods each constructed with a shoulder h2 and cut away therebeneath, substantially as and for the purpose set forth.

4. In a device for supporting and lowering centers for laying tile arches, the combination of the ledgers D, the ledgers D2, the rods H each constructed with a shoulder toward its upper end and engaged with the corresponding ledger D at its lower end, the rod K engaged with the ledgers D2 and having removable connections with the rods H respectively, and means to engage said shoulder on the rods H to support said rods in disconnecting the rods K therefrom, substantially as set forth.

5. In a device for supporting and lowering centers for laying tile arches, the combination of the ledgers D, ledgers D2, the rods H engaged with the ledgers D, the rods K engaged with the ledgers D2 and each having a removable connection with the corresponding rod H, and a lever engageable with each of the rods H to support the same in disconnecting the rods K therefrom, substantially as set forth.

6. In a device for supporting and lowering centers for laying tile arches, the combination of the ledgers D, the rods H engaged therewith, the ledgers D2, the rods K engaged therewith, a connection between the rods K and H having a removable engagement with the rod H, a head-piece engageable with the rod H, a rope or cable engaged with said headpiece, and means to support the rod H in disengaging said connection therefrom, substantially as set forth.

7. In a device for supporting and lowering centers for laying tile arches, the combination of the ledgers D located below the I- beams of the door upon which the tile arch is to belaidandsupportingacenterthereupon,rods H engaged with said ledgers, ledgers Dzlocated upon the I-beams of the door above that on which the arch is to be laid, rods K engaged with the ledgers D2 and removably connected at their opposite ends with the rods H, and means to support the rods H in disconnecting the rods K therefrom, and for lowering the rods H with the center supported thereby, substantially as set forth.

8. In a device for supporting and lowering centers for laying tile arches, the combination of the ledgers D, the rods H engaging said ledgers and extending through the completed arch, a perforated head-pieceJ of a diameter not greater than the diameter of the rod, engaged with the upper end of said rod, and a rope or cable connected with said headpiece, substantially as and for the purpose set forth.

In testimony whereof I sign this specilcation in the presence of two witnesses.

ALEXANDER B. MGLAUGHLIN.

Vitnesses:

N. S. Wnrenr, O. B. BAENZIGER.

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