US727647A

US727647A - Self-mitering cornice-mold.

Info

Publication number: US727647A
Application number: US12185302A
Authority: US
Inventors: Murray Denham Lewis
Original assignee: Individual
Current assignee: Individual
Priority date: 1902-09-02
Filing date: 1902-09-02
Publication date: 1903-05-12
Anticipated expiration: 1920-05-12

Description

S I W E iT SELF MITERING GO-RNIGE MOLD-V APPLIOATION FILED SEPT. 2, 1902.

N0 MODEL. 7

Attorneys No. 727,647. g

UNITED STATES.

. Patented May12, 1 903.

PATENT OFFICE.

MURRAY DENHAM LE WIS, OF SYDNEY RIVER, CANADA.

'SELF-MITERING coamcsg-mOLn.

SPECIFICATION formingpart Of LetiiGIS Patent N 727,647Jdated May12, 1903.

i I Application filed September 2, 1902. Serial No. 121,853 (No model.)

To all whom it may concern:

Be it known that I, MURRAY. DENHAM LEWIS, a subject of the King of GreatBritain, residing at Sydney River, county of Cape Breton, Province of Nova Scotia, Canada, have invented certaln new and useful Im-- provements in Self-Mitering Cornice-Molds; and I do hereby declare that the following is 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 an apparatus for molding interior cornices of buildings, such as ceilings and the like, and especially de signed for producing automatically miter joints or corners by the ordinary strickling process and without the necessity of any hand-molding.

My invention embraces the device herein shown and whose operation will be presently described; and it consists in the combinations and constructions hereinafter described and claimed.

In the drawings accompanying this specification Figure 1 is a ers ective view of an interior or ceiling cornice, showing my improved apparatus in the operation of molding the cornice. Fig. 2 is a plan view of the apparatus. Fig. 3 is-an oblique sectional elevation taken on the line 3 3 of Fig. 2. Fig. 4 is a side elevation from the left side or a front elevation of the apparatus as shown in Fig. 1.

The same numerals of reference denote like parts ineach of thefigures of. the drawings.

My improved apparatus consists, primarily,

of a pair of slipper-bars 5 6, which are joined.

together at their ends in the form of a right angle and secured firmly in this position by means of a triangular gusset 7, of brass or other metal plate. From the angle 8, formed by the two'meeting slipper-rods,risesa framework, comprisinga pair of jaws or clampingplates 9, which are parallel to each other and lie in a plane biseoting the right angle formed;

by the two slipper-rods,'as show-n. These are separated from each other by a strip of sheet metal 10, and the jaws 9 are secured to each other and the strip 10 by means of rivets 11. The jaw-plates are firmly and rigidly braced in their position by means of oblique handle- .j'aws and the cutting-plate.

A rods 12 13, which aresecured to opposite sides of the jaws and to opposite ends of the respective slipper-rods, as--shown,and these may be preferably constructed of metal tubing soldered or welded to the clamping-plates or jaws 9 and secured to the slipper-rods by screws or other fastenings 14.

The framework comprising the jaws may be appropriately centered and secured in place at the angle of the slipper-rods by a screw-bolt 15 passing through the angle and through an eye 16, formed in the lower end of the strip 10, and having its head mortised into a washer or wear-plate 17. At .the upper ends the clamping-plates are connected together by a small flat plate 20, of metal, which is intended to rest against the ceiling during the molding operation and preventthe indentation or scratching of the same.

The slipper-rods are preferably protected on their lower and outer sides by metallic shoes 18, formed ofrectangularly-bent sheetmetal strips and screwed or otherwise fixed to the slipper-rods, as shown in Fig. 4, Wherein it is seen that the lower outside edges of the slipperrods are preferably beveled, as all] 19. 1

The jaws or clamping-plates 9 are, as shown, not rectangular in outline, but they are intended to form securing means for amolding-templet or cutting-plate 21 of any proper form having the outline of the desired cor- ,nice-molding.

This molding-plate is removably secured in place by short transverse bolts 22 passing through holes in thesides of the This cuttingplate may therefore be changed at will, according tothe pattern desired, to bO-fmOldGd.

The modeof operating my improved cornice-mold isshown in Fig. 1,and is briefly as follows: The mold is run on a wooden rod or railing-support 23, secured on the side of the wall below the cornice in the same'manner as ordinary cornice-molds,'and the plaster forming the material of the,1nold is struck on with a trowel, as shown at 2,4, to be strickled ofi by the cutter 21 in its passage. In thisoperation it is to be observed thatone of the-slipper-rods 5 6 runs on the'railing'23, and thus the cutter always forms an angle of forty-five degrees with the direction of motion and with the wall on the side of which it is moving.

The operator can commence the molding operation the same as he would an ordinary mold and run, for instance, to the left, using the right-hand handle-bar 13 to grasp the mold and push it along, the slipper-rod 6 running on the railing 23. On reaching the corner of the room the opposite slipper-rod 5 will be found resting on the railing on the adjacent wall of the room, and by grasping both handles temporarily the mold may now be moved along the adjacent wall away from the corner for any desired distance, and of course after the mold has passed the corner only one of the handle-bars-as, for instance, in this case the handle-bar 12-need be grasped. The molder can finish the piece started on to any distance from the corner in this manner and then turn the apparatus around its axis through ninety degrees, so as to have the right-hand side next the wall, the same as in its original position in Fig. 1, and so proceed to the next corner, and so around the room. It will thus be seen that the mold enables the cornicer to finish a right-angled miter and finish fairly well any other miter, or, if desired, the apparatus may be fitted to any suitable angle by joining the slipper-rods 5 and 6 at that angle. This, therefore, does away with all hand labor in finishing up the cornice by hand, such as is necessary with the molds now used, because from three to six inches in the corner are left which cannot be strickied off by the mold. It will be seen, however, that the operator can take out the connecting-plate and substitute as many different patterns as he wishes. For making a larger-sized cornice a larger-sized mold would of course have to be used.

\Vhile I have shown in the accompanying drawings the preferred form of my invention, it will be understood that I do not limit myself to the precise form shown, for many of the details may be changed in form or position without affecting the operativeness or utility of my invention, and I therefore reserve the right to make all such modificationsas are included within the scope of the following claims or of mechanical equivalents to the structures set forth.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A cornice-mold comprising a pair of slipper-rods connected together end to end at right angles with each other, a triangular gus-.

set-plate connecting the two slipper-rods at the angle, a pair of parallel clampingplates mounted at a short distance apart in a plane bisecting the angle between the rods, a molding-plate removably secured between said clamping-plates, a separating Web or strip between the two clamping-plates and having a lug formed on its lower end, and a screw-bolt passing through the two slipper-rods at the angle and also through the gusset-plate and a hole in said lug and securing the parts together, substantially as described.

2. Acornice-mold comprising a pair of slipper-rods connected together end to end at right angles with each other, a triangular gusset-plate connecting the .two slipper-rods at the angle, a pair of parallel clamping-plates mounted at a short distance apart in a plane bisecting the angle between the rods, a molding-plate removably secured between said clamping-plates, a separating web or strip between the two clamping-plates and having a lug formed on its lower end, and a pair of oblique handle-rods joining the upper portion of the clamping-plates at opposite sides thereof to the free ends of the respective slipperrods.

3. A cornice-mold comprising a pair of slipper-rods connected together end to end and at right angles with each other, a triangular gussetplate connecting the two slipper-rods at. the angle, a pair of parallel clamping-plates mounted at a short distance apart in a plane bisecting the angle between the rods, a molding-plate removably secured between said clam pin g-plates, a separating Web or strip between the two clamping-plates and having a lug formed on its lower end, and a set of metallic shoes covering the outside and lower edges of said slipper-rods.

at. A cornice-mold comprising a pair of slipper-rods connected together end to end at right angles with each other, a triangular gusset-plate connecting the two slipper-rods at the angle, a pair of parallel clamping-plates mounted at a short distance apart in aplane bisecting the angle between the rods, a molding-plate removably secured between said clamping-plates, a separating web or strip between the two clamping-plates and having a lug formed on its lower end, a screw-bolt passing through the two slipper-rods at the angle and also through the gusset-plate and a hole in said lug and securing the parts together, a pair of oblique handle-rods joining the upper portion of said clamping-plates to the free ends of the respective slipper-rods, and a hori zontal ceiling-rest 20 covering the upper ends of said clamping-plates, substantially as described.

In witness whereof I have hereunto set my hand in the presence of two witnesses.

MURRAY DENHAM LEWIS.

Witnesses:

KEITH BALL, STANLEY LEWIS.

IIO