|Publication number||US1390918 A|
|Publication date||Sep 13, 1921|
|Filing date||Sep 30, 1920|
|Priority date||Sep 30, 1920|
|Publication number||US 1390918 A, US 1390918A, US-A-1390918, US1390918 A, US1390918A|
|Inventors||Mcfarland Daniel J|
|Original Assignee||Mcfarland Daniel J|
|Export Citation||BiBTeX, EndNote, RefMan|
|Referenced by (4), Classifications (5)|
|External Links: USPTO, USPTO Assignment, Espacenet|
D. J. McFARLAND. MOLDEOARD ANCHOR. APPLICATION FILED SEPT. 30, 1920.
Patented Sept. 13, 1921.
UNITED STATES PATENT org-ice.
To all whom it may concern:
Be it known that I, DANIEL J. MCFAR- LAND, a citizen of the United States, residing at San Francisco, in the'county of San Francisco and'State of California, have invented certain new and useful Improvements in Moldboard-Anchors; and I do declare the following to be a full, clear, and exact description of the invention such as will enable others skilled in the art to which it appertains to make and use the same.
My invention relates to improvements in forms or molds used in cement and concrete construction, and more particularly to a novel device for securin the mold boards tightly against the vertical studs. Heretofore, it has been the usual practice to 'toenail the studs to the mold boards, but in so.
doing, a great deal of difficulty is encountered and often the'mold boards and studs are-not drawn into tight contact, causing some of the boards to project inwardly beyond the others with the result that a rough job is produced when the wall or the like is poured. Furthermore, when the mold boards and studs are secured together by toe-nailing, it is rather difficult to knoc the molds down after the wall has set.
My invention has for its object to provide an extremely simple and inexpensive, yet a highly efficient and durable device for overcoming the difficulties above pointed out, said device consisting briefly of a shank for reception between adjacent mold boards, a head on one end of said shank comprisin oppositely extending arms to contact wit the inner sides of i the mold boards, and a lateral prong on the other end of the shank adapted to be driven into the studs by a single hammer blow. By the use of this de-.
vice, not only can the mold be more rapidly and easily assembled, but it may be knocked down with equal facility after use.
With the foregoing in view, the invention resides in the novel device hereinafter described and claimed, the descriptive matter being supplemented by the accompanying drawing which forms a part of this appli cation. i
Figure 1 is a perspective view showing one form of my invention appiled to hold a pair of mold boards against a stud.
Fig. 2 is a perspective view showing a different form of construction.
. Specification of Letters Patent.
Patented Sept. 13, 1921.
Application filed September 30, 1920. Serial No. 413,714.
Fig. 3 is a view similar to Fig. 2 but illustrating a still further form of the device.
Fig. 4 is a plan view of the device shown in F1g. 1.
In the drawings above briefly described, the numerals 1 designate a pair of mold boards adapted to be secured against the inner sides of a plurality of studs such as that indicated at 2. For this purpose, the present invention is employed. In Fig. 1, the improved device is formed of a sin lecom aratively fiat metal bar, preferafily" wi ened toward one end, said end being centrally split in a longitudinal direction and bent laterally in opposite directions at opposite sides of the split, forming a cross-head which consists of oppositely extendin arms 3 which are adapted for contact with the inner sides of adjacent mold boards as illustrated in Fig. 1, the free ends of the arms being by preference beveled at 4 to facilitate application of the device. From the arms 3, the body portion of the bar extends at right angles and formsa shank 5 for reception between adjacent mold boards as shown, the end of said shank remote from said arms, being bent laterally at 6 to form a prong which is adapted to be driven into one of the studs 2. This prong is positioned at a slightly obtuse angle with respect to the shank 5, such angle being only slightly more than a right angle. (See Fig. 4.) By this arrangement, when the prong is driven into the stud, the entire device will be drawn outwardly, thereby bringing the arms 3 into tight contact with the boards 1 and forcing the latter tightly against the stud.
In the form of construction shown in Fig. 2, the device is constructed from a single length of suitable gage wire. This wire is folded upon itself centrally between its ends as indicated at 7 and the two halves of the wire immediately adjacent to the fold are flattened and form a prong 6 to penetrate a stud. From the prong, the two halves of the wire extend at a slightly obtuse angle to form a shank 5 for reception between the mold boards. The ends of the wire are bent laterally in opposite directions to form arms one'end bent laterally and sharpened to form a prong 6 corresponding to the prongs 6 and 6 above described. The sides of the prong 6 and the portion of the shank 5 adjacent said prong are preferably flattened as indicated at 8. This not only permits easy driving of the prong into the stud but facilitaites proper striking of the device with a hammer when driving.
The end of the shank 5 remote from the prong 6 is upset or otherwise suitably secured in a central opening in an elongated plate whose ends 3 constitute arms corresponding with the arms 3 and 3 above described. The plate in question is preferably of the diamond-shape shown with its ends curved outwardly to a slight extent as shown at 4 for the same purpose as the formations 4 and 4 above mentioned.
In securing the shank 5 to the plate which forms the arms 3, I preferably provide said shank with a reduced neck 9 which passes through the central opening of said plate, the free end of said neck bein upset as indicated at 10. It will be un erstood that the plate and shank may be otherwise joined if desired.
The relation of the prongs 6 and 6" to the body portion 5 and 5 respectively, is the same as the relation between the prongs 6 and the body 5, that is, the prongs are disposed at a slightly obtuse angle to the body portitpn as will be clear by reference to The devices shown in Figs. 2 and 3 operate in the same manner as that disclosed in Fig. 1 and it will be observed that all of these articles will be highly efficient and in every way desirable, permitting the mold to be more easily and quickly assembled and 40 -be followed. However, within the scope of the invention as clalmed, numerous changes in form, proportion and minor details may be made.
1. A device for securing mold boards to studs comprising a shank for reception between adjacent mold boards, one end of said shank having oppositely extending arms to bear against the inner'sides-of the mold boards, the other end of said shank having a laterally extending prong to be driven into the stud after said'arms are engaged with the mold boards, said prong being disposed at a slightly obtuse angle to said shank, whereby to draw said arms tightly against the mold boards when driving said prong.
2. A structure as spcified in claim 1, the inner sides of said arms being beveled at their outer ends to facilitate engagement thereof with the mold boards.
3. A device for securing mold boards to studs comprising an elongated plate adapted to contact with the inner sides of adjacent mold boards, said plate having a central opening, and a shank secured at one end in said opening and extending at right angles from said plate, the other end of said shank being bent laterally and sharpened to form 0. prong adapted to be driven into a stud.
In testimony whereof I have hereunto set my. hand.
DANIEL J. M FARLAND.
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US4584808 *||Apr 9, 1984||Apr 29, 1986||United States Gypsum Company||Concealable double acting fastener for wallboard|
|US6071054 *||Mar 18, 1999||Jun 6, 2000||Tebo; Glenn J.||Deck fasteners|
|US6481613||Feb 16, 2000||Nov 19, 2002||Glenn J. Tebo||Fastener driving device|
|US6488438||Feb 16, 2000||Dec 3, 2002||Glenn J. Tebo||Board leveling apparatus and method|
|U.S. Classification||411/458, 105/423|