US 2638774 A
Description (OCR text may contain errors)
May 19, 1953 w E 2,638,774
I BACKING UNIT FOR WALL OPENINGS Filed Nov. 30, 1949 INTOR. E72 5! ZW/za/z,
ATTCI RN EYS Patented May 19, 1953 538,774 eacmecm'r Fon wAcL OPENINGS EEnnestaWieman, Tomah, Wis. ,Apiilication November 30, 1949;;SerialNo; 130;99
' "This inventionrelatesto repairtoiols,-implemerits, and the like and "particularlytools used for repairing walls ,inbuildingsan'd the like, and
in particular the invention relatestoa -small jack, or extensible stand having" a stem=-pivotally mounted inla baseiand having awplate threaded thereon wherein with the "base positioned against the wall on one side of studdingtn'e plate may be clamped againsttheinner surface of a-wallon iithe opposite side ofhthestudding tO pi'oVide-a jbacking'for'a hole oropening through the wall.
"The purpose of this 'invention"is"-to provide means for holding plaster; plaster Of'Pa-ris; cement, or the like in an'opening in a wall to "facilitate repairing, atwallin which anop'ening" has been accidentally or otherwise'formed;
In the usual type of frame building construction'it isdifficultto repair an opening through from the outsideiof the wall the-material is forcedthrough the wall. Withthisthought in 'mind this'inventioncontemplates a backing plate clamped against the inner surfaceof the wall Wherebyplaster or the like may be forced into" and. secured in the opening.
The object of this invention '*is,"therefore, to provide abacking platewcoverin'gthe inner end of an opening through la wall or theJikeaand means for. clamping backinga-plate imposition -uasvthe opening is filled with, plaster or the-like.
Another object of the invention is to provide a backing platefor-filling openings in walls and thelli ke that may be usedwbyzthe average-layman.
vAnother object ofithedn'vention is to=,provide a" backing plate -.for,fi11ing openings in walls and the like which remains in "the'wall, forming an integral part thereof.
A further object of the invention is to provide a backing plate for facilitating filling openings in walls and the like and that is positively clamped in position which is of a simple and economical construction.
With these and other objects and advantages in view this invention embodies a backing plate having gripping teeth on the edges and a centrally disposed nut on the inner surface, a rod having a handle on the outer end extended through the backing plate and threaded in the nut on the back thereof, and a coacting or base plate pivotally connected to the opposite end of the rod or stem.
Other features and advantages of the invention will appear from the following description taken in connection with the drawings wherein:
, plaster, lathe, or othe1"=types-of wall material as "when: pressure is appliedto 'the"fi1ling' material -12 Figurel isa cross section through a wall illustratingthe position-of the backing plate inhuse. flFigur'e -2 isa si-rnilar sectien showing the open- "ing in thewall filled with-plaster .01 the like,
with the plaster positioned against the backing plate and with parts brokenaway.
"Figure 3"ls a 'section taken on line 3-4; of Figured showing-the inner 'sui'face .ofthe backing plate.
"Figure 4 is a similar section taken on linerllfil of" Figure 1 showing thecoacting plate son the h oppositeside of the wall.-
Figure '5 -is a "longitudinal'section throughe-the backing plate mounting element showing the "-stem'in elevation.
Figure 6 is a detail= illustrating a modifica- 'tion wherein openings are provided through the backing plate for holding plaster and'ithe like.
Referring now to the drawings wherein: like reference characters denote corresponding parts the "wall repairing ba'ckiiigplate of *this invention includes ap'late 40'; a' stem 3H andv a coact- 'ing or" base plate P2.
"The" backing plate I t is formed with prongs? or projections 13 at the-corners; ithat =holdathe plate in position in the inner surface of:.;a-. wall .:.I l and the face: "of the plate is-provided.with a 1123b '15 by which-theplate may -be heldby a pairiof "pliers or the 'like w ith which the iplatevmay @be inserted inthe wall. it nut 13- isspiviotally con- -nected to the back of the plate :"I ll 'through bear- 'ingelements zll and it with ipins :Hlanct 'lfl ex- -:tended"from ethe asides: of (the nut ,PI 6; -,,extended through thegbearing elements. 5'1 @jjPlSfbQqi-S provided with a centrally/'1 ,disposed jopening 2i Athrough whichrthe stem l textends, as illustrated :iIhe vstem H; which is providedwith i a threaded section 22 is provided with a handle 23 on the outer end and a head 24 on the inner end is held in a circular socket 25 on the base [2 with the stem extended through an opening 26 in the socket. The base plate I2 is also provided with projections, as indicated by the numeral 21, at the corners and that bite into the wall surface to prevent turning of the plate as the stem II is turned.
In the design shown in Figure 6 a backing plate 28 similar to the plate 10 is illustrated and this plate which is also provided with prongs or projections 29 at the corners is provided with perforations or openings 30 to facilitate holding plaster thereto.
With the parts arranged in this manner the device may be inserted through a hole in the wall and with the plate I positioned over the inner end of the hole or opening the plate 12 may be positioned against the inner surface of the opposite wall, as indicated by the numeral 3| and by rotating the stem II the plates l0 and 12 will be forced against the inner surfaces of the walls with the prongs biting into the material of the wall. With the parts in position the handle 23 and outer end of the stem Il may be filed or otherwise cut at the point 32, as shown in Figure 2 and the opening which is indicated by the numeral 33 may be filled with plaster as indicated by the numeral 34. The plaster, or the like, may therefore be forced into the hole or opening in the wall whereby a smooth outer surface may be provided.
The device may be provided with a plurality of backing plates [0 and the plates may be of different sizes so that a small plate may be selected for a small opening anda large plate for a large opening.
It will be understood that modifications may be made in the design and arrangement of the parts Without departing from the spirit of the invention.
What is claimed is:
1. A wall repairing unit comprising a backing plate having a centrally disposed opening therethrough and having prongs extended from one side and positioned on the corners thereof, a nut pivotally mounted on the side of the backing plate opposite to that from which the prongs extend and positioned in alignment wit the opening therethrough, a stem having a handle on one end extended through the opening in thelbacking plate and threaded in said nut, and a base plate having prongs extended from one surface and having a socket with an opening therein on the opposite surface, the end of the said stem opposite to that on which the handle is positioned being pivotally mounted in and free to rotate in the said socket of the base plate.
2. In a wall repair unit, the combination which comprises a backing plate having prongs and a tab extended from one side and having :a centrally disposed opening therethrough, a nut having a threaded opening therethrough, means pivotally mounting the nut on the surface of the backing plate opposite to that from which the prongs and tab extend and in alignment with the opening through the backing plate, a threaded stem extended through said nut and opening in the backing plate, said stem having a handle on the end extended through the opening in the backing plate and nut and a head on the opposite end, and a base plate having a socket on one side in which the head of the stem is pivotally mounted and free to rotate, said base plate having prongs extended from the outer side for locating the base plate against the inner surface of a wall on one side of studding with the backing plate positioned over an opening in the surface of the wall on the opposite side of the studding whereby the opening through the wall against which the backing plate is positioned may be filled with plaster or the like.
3. In a wall repair unit, the combination which comprises a backing plate having prongs and a tab extended from one side and having a centrally disposed opening therethrough, a nut having a threaded opening therethrough, means pivotally mounting the nut on the surface of the backing plate opposite to that from which the prongs and tab extend and in alignment with the opening through the backing plate, a threaded stem extended through said nut and opening in the backing plate, said stem having a handle: on the end extended through the opening in the backing plate and nut and a head on the opposite end, and a base plate having a socket on one side in which the head of the stem is pivotally mounted and free to rotate, said base plate having prongs extended from the outer side for locating the base plate against the inner surface of a wall on one side of studding with the backing plate positioned over an opening in the surface of the wall on the opposite side of the studding whereby with the outer end of the stem and handle thereon removed the opening in the wall against which the backing plate is positioned may be filled with wall surfacing material.
4. In a wall repair unit, the combination which comprises a backing plate having an opening therethrough, an internally threaded nut having pins at the sides positioned to register with the opening in said backing plate, bearing elements mounted on the backing plate and positioned to receive the pins of the nut, a base plate having a socket thereon and a stem extended through and threaded in said nut and positioned with one end thereof rotatably mounted in the socket of the base plate.
References Cited in the file of this patent UNITED STATES PATENTS Great Britain of 1914 OTHER REFERENCES American Builder, September 1949, page 115.