US2700434A

US2700434A - Masonry structure anchor

Info

Publication number: US2700434A
Application number: US182241A
Authority: US
Inventors: Tofanelli Daniel Dario
Original assignee: Otis Elevator Co
Current assignee: Otis Elevator Co
Priority date: 1950-08-30
Filing date: 1950-08-30
Publication date: 1955-01-25
Anticipated expiration: 1972-01-25

Description

Jan. 25, 1955 D. D. TOFANELLI 2,700,434

MASONRY STRUCTURE ANCHOR Filed Aug. 50, 1950 VIII/[1210723.f4

DAN/EL DAR/O TOFANELL/ INVENTOR BY ATTORNEY FIGB United States Patent I MASONRY STRUCTURE CHOR Daniel Dario Tofanelli, Mill? Valley, .Calif.,r.assignorz to Otis Elevator Company, New. YorkyN. Y.,.arcorporation of New Jersey Application Apgust 30, 1950, Serial No. 182,241

4 Claims. (Cl. 187-95) 'The invention relates to anchors-for makingfastenings to. masonrystructures, especially to anchors for fastening guide rails for elevators'irr concrete buildings.

In the past,. elevatorguide rails"have.been secured to concrete wallsby insertscmbeddedin the concreted'uring construction or by means of screw anchors secured in holes drilled in the concrete after the wall is formed. Both of these methods have constructional difficulties. The inserts are set inside the forms, making it difiicult to properly locate the insert and the bolt slots in the inserts are often clogged with concrete when the forms are removed. As to the screw anchors, the installation costs are relatively high and the anchors cannot be installed until the forms are removed.

The present invention has as its principal object the provision of an anchor which can be readily and economically installed and which has a maximum holding strength.

One feature of the invention resides in an anchor which is set from the outside of the forms.

Another feature of the invention resides in an anchor which when installed facilitates the ready mounting of the guide rail.

Still another feature of the invention is the provision of an anchor which is readily adaptable to concrete constructions having vertical reinforcing bars.

Other features and advantages will become apparent from the following description and appended claims.

In the drawings:

Figure l is a side view of a portion of one side of an elevator hoistway illustrating the mounting of an elevator guide rail and embodying the invention;

Figure 2 is an enlarged detail in plan illustrating the installation of a guide rail anchor in accordance with the invention;

Figure 3 is a front view of the same;

Figure 4 is a sectional view taken along the line 4- -4 of Figure 3;

Figure 5 is a view like Figure 4 but with the forms for the concrete removed;

Figure 6 is a view in horizontal section illustrating the manner of mounting a guide rail by means of a rail bracket secured to a pair of anchors;

Figure 7 is a detail sectional view illustrating mounting a guide rail directly on the anchor; and

Figure 8 is a plan view of another embodiment of anchor.

The invention will be described by way of illustration in connection with the guide rails for an elevator car. Referring first to Figure l, the elevator guide rail 11 comes in sections which are secured together by means of fish plates 12. In the arrangement illustrated, the rails are mounted on rail brackets 13. The rail brackets are positioned along the hoistway wall 14 at spaced intervals, a

chair type bracket being illustrated. These brackets are secured to anchors 15 embedded in the hoistway wall.

Referring now to Figures 2, 3, 4, 5, 6 and 7 each anchor comprises an angle formed preferably with a long leg 16 and a short leg 17. The long leg 16 is embedded in the concrete wall 14 and is provided with a plurality of partially closed slots 18 which form hooks 20 to securely anchor the leg in the concrete. The slots are wide enough to permit the flow of aggregate. Also the slots readily accommodate any vertical reinforcing bars near the concrete surface. An angle of three-eighth inch stock about twelve inches in length, with a five inch long ice leg; and a three and one-halfineh'shortl'eg has been found satisfactory.

The anchors are inserted at the joints. 21 ofthe boards ZZ OflhC'WOOd forms beforethe concr'eteis poured. 'The insertion is'made from the outsideof. the f0rms,. greatly facilitatingthe positioning. and aligning of. the anchors. A slot 23 'is" cut atthe joint 21*in theedgeof a board. to admit the long. :leg of the anchor. The short leg of'the anchor thus remains onthe' outside of'the form to-become the fastening" surface for' the rail" bracket. The anchor .is held. in place with the short leg tight against the form. by a'rwood' cleat'24 on'the'outside' of'the form. This: eleat extends vertically acrossthe short-leg and isjsecured. by nails 25 to the form" above and below the anchor. Thus these anchorsmaybe installed 'bythe carpenters who erect the forms, obviating the necessity of having elevator construction men make frequent visits to. the job to install in.- serts.

"When'the form is'removed, the short leg' stands out from the wall. This enables the anchors to be drilled to receive mounting bolts when ready to mount the rails. Also a space 26 is provided between the short leg and the wall to admit the nut 27 for the mounting bolt 28. The usual practice for the guide rails for the elevator car is to mount the rails on chair brackets 13 by means of rail clamps 31. In such cases, the brackets are mounted on a pair of spaced anchors 15 by bolts 28. Where side clearances are close, the rail may be mounted directly on the anchor, as by clamps 31 bolted to the anchor as indicated in Figure 7. This is especially advantageous as considerable economy is effected by the elimination at each fastening of the rail bracket and one of the anchors. counterweight rails (not shown) are usually mounted on U-shaped brackets which may be bolted to spaced anchors 15.

Various other arrangements of slotting the long leg of the anchor may be employed to secure a good bond in the concrete. For example, an arrangement is illustrated in Figure 8 is which the slots 32 are formed to provide a herring-bone effect. Also, while described in connection with a concrete wall, the anchors may be utilized with other types of masonry walls such as brick walls or concrete block walls, as by embedding the long leg of the anchor in a mortar joint and spacing the short leg from the wall by a board.

As many changes could be made in the above construction and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense.

What is claimed is:

1. In an elevator installation having a masonry elevator hoistway wall, in combination; an elevator guide rail; an anchor for fastening said guide rail to said wall, said anchor being in the form of an angle, one leg of which is embedded in the wall and is provided with a plurality of anchoring slots which firmly secure said angle in the wall; and a mounting bolt for said rail, the other leg of said angle extending parallel to said wall and outwardly therefrom to provide a space for the nut for said bolt and having an aperture through which said bolt is inserted for screwing on the nut.

2. In an elevator installation having a masonry elevator hoistway wall, in combination; an elevator guide rail; mounting means including a mounting bolt and a nut therefor; and an anchor for fastening said guide rail to said elevator hoistway masonry wall, said anchor being substantially in the form of a right angle, one leg of said anchor having a bolt receiving aperture therein and the other leg of said anchor having formed therein a plurality of partially closed slots, said slotted leg of said anchor being embedded in the solidified masonry wall, and said one leg of said anchor extending substantially parallel to and spaced from the surface of said wall, said rail being affixed to said one leg of said anchor by said mounting means.

3. In an elevator installation having a masonry elevator hoistway wall, in combination; an elevator guide rail; 21 pair of rail clamps, one for each side of said guide rail and each having a bolt receiving aperture; a pair of mounting bolts, one for each rail clamp; and an anchor for mounting said guide rail, clamps and bolts in integral relation on said elevator hoistway masonry wall, said anchor being substantially in the form of a right angle, one leg of said anchor having a pair of spaced bolt receiving apertures therein, the other leg of said anchor having formed therein a plurality of partially closed slots, said slotted leg being embedded in the solidified masonry wall, and said one leg of said anchor being spaced from and extending substantially parallel 'to the surface of said wall, said rail being secured at each of 1 its sides to said other leg by said rail clamps, each of which is afiixed to said one leg by one of said mount-- ing bolts and nuts.

4. In an elevator installation having a masonry elevator hoistway wall, in combination; an elevator guide rail; a bracket having a bolt receiving aperture near each end thereof; a pair of mounting bolts and nuts therefor; a pair of rail clamps each having a bolt receiving aperture therein; an additional pair of mounting bolts; and a pair of horizontally spaced anchors on which said rail bracket, clamps, and bolts are affixed to said wall, each of said anchors being substantially in the shape of a right angle, one leg of each anchor having a bolt receiving aperture therein, the other leg of each of said anchors having formed therein a plurality of partially closed slots, said slotted legs being embedded in the solidified masonry wall, and said one leg of each of said anchors being spaced from and extending substantially parallel to the surface of said wall, said rail being affixed to said bracket by a bolt and nut secured rail clamp at each of its sides and each end of said bracket being aflixed to a respective one of :said anchors by a nut-secured mounting bolt through the apertures of each.

References Cited in the file of this patent UNITED STATES PATENTS 1,470,728 Hall Oct. 16, 1923 1,901,520 Keisling Mar. 14, 1933 1,925,867 Dunlop Sept. 5, 1933 1,942,392 McChesney Jan. 2, 1934 1,954,928 Graef Apr. 17, 1934 2,271,584 Fellom Feb. 3, 1942 2,431,104 Bright Nov. 18, 1947