US1742851A - Corner-molding bender - Google Patents

Description

- Jan. 7, 1930. J, w FARR l CORNER MoLDING BENDER Filed sept. 4, 1928 2 Sheets-Sheet 1 Jan. 7, 1930.`

J. w. FARR CORNER MOLDING BENDER 2 Sheets-Sheet 2 Patented Jan. 7, 1930 UNITED STATES JOSEPH W. FABER, F OAK PARK, ILLINOIS CORNER-MOLDING BENDER Application led September 4, 1928. Serial N'o. 303,677.

My present invention relates to the provision ofan apparatus for bending edge or corner molding. It is the present practice to secure to the intersection of two or more walls before the plastering is put on, a molding of metal which constitutes a folded band, the edges whereof are secured to the respective intersecting walls and the fold whereof constitutes a strengthening reinforcement for the edge or intersection of the Walls. l Such intersections, as at the location of windows, door openings and hallways, are often curvilinear and the present method of bending the molding to conform to the curve is around a barrel or any convenient object which fails to secure a uniformity of bending or curvature and also fails to properly separate the edges of the molding for engaging the respective walls at the place of juncture.

The need of some practicable contrivance to bend metal corner beads is increasingly felt. Metal beads, to protect salient angles of plastered walls, while a comparatively recent invention, are ever coming into more general use. The changing style of architeeture, in which arched openings are more and more taking the place ofdoors and doorways, creates a need for bending such beads properly. It neither looks well,'nor furnishes the full protection, when the bead is only used on the straight parts of such arched openings, and such arched openings being usually in the most important and prominent places of a house makes it imperative that such a bead should be put on in a good workmanlike manner. The peculiar diiculties to be overcome in bending this particular article arise because corner beads are ofA delicate construction. Designed to oder considerable resistance from some directions, and strong 'in those directions-when fixed in place, they are weak and fragile in themselves, with an inevitable tendency to bend in the easiest direction and that direction the one that spoils them; consequentlyno great force, and particularly no mis-directed force, can be used. An important feature of this inventionis the combination of roller and chuck, or clutch, which grasps the bead in its only strongplace, the apex of the bead, and in combination with the free roller wheels, which work from below into the under side or reentrant of said apex of the bead, bends and shapes it as required, working only on the essential part of the bead the bead is bent so that it will lay on the corner at the necessary angle of Obliquity so that the plaster may be of equal thickness on each side of the salient angle.

My present invention relates to the provision of a sturdy and effective device which may be easily adjusted to secure the curve desired and also to secure the desired separation of the edges of the corner molding.

In my device I have employed three bending or forming wheels adjustable with relation to each other in the same plane, which is not unusual in other arts, but I have also provided means for adjusting the aforesaid forming wheels independently in different planes and have provided means for securing sufficient traction upon the molding to draw it through the apparatus.

I have further provided an arrangement of idler wheels which may be used, if desired, in connection with the lateral wheels for more certainly holding the head or molding as may be requisite thereto. j

I have attained the foregoing objects and results by means of the structure illustrated in the accompanying drawing in which- Fig. l is a side view of an edge bending apparatus embodying my invention,

.Fig 2 is a central transverse section of the structure shown in Fig. 1, the central forming wheel being shown in elevation, 1 Fig. 3 is a central transversey section of the central forming wheel,

Fig. 4 is a longitudinal sectional elevation of the structure shown in Figa-1,

Fig. 5 is a horizontal section on lines 5-5 of Fig. 4:, and

Fig. 6 is a schematic view showing the relation of the molding to one of the lateral forming wheels and idler.

Similar reference characters refer to similar parts throughout the several views.

The apparatus is mounted upon a base comprising the longitudinal side sills 8 8 secured to each other by the transverse end sills 9-9. Arising from points upon the side lao sills equally and suitably spaced from the centers of said side sills are standards 10. There are two of these standards 10 arising from each sill and the tops of the respective standards are united by and secured to a plate or lintel 11. The inner or opposing faces of each standard upon the same sill, as seen in Fig. 5, is grooved or rabbeted, as at 12, te receive lateral tongues carried by the corner rails 13 of the vertical carriage for the central forming wheel. The corner rails of the vertical carriage are secured at their tops to a plate or sill 14 upon the top of which is a block l5, in the top of which is revolubly mounted a screw 16 cor-operating with threads in the plate 11 and rotated by a handv wheel 17 to elevate or kdepress the vertical carriage. The faces of the corner rails 13 ofthe vertical carriage opposite the tongues kentering the grooves 12 are grooved or rabbeted, as at 18, to receive pintles or studs 19 projecting from the sides of journal members 20-20. There are two of these journal members 20--20, shown best" in Fig. 1, which fill in the space between the corner rails 13, each block being provided with a stud or pintle 19, which eX- tends into the groove or rabbet 1S, whereby Vthe journal blocks may be Vboth elevated vertically and swung Yhorizontally about the pintles 19. In the meeting edges of the journal blocks 20-20and opposite the studs or pintles 19 are provided semi-circular apertures 21, whiclutogether, constitute the bearing for the shaft 22 upon which is mounted the central forming wheel.

V.In order to give this central forming wheel an angular, as well as a vertical, adjustment,

vI secure beneath the plate or sill 14 .and be,-

tween the corner rails 13 a cross bar 23 spaced sufciently beneath the plate or sill 14 to accommodatel a handwheel 24. This hand wheel 24l cooperates with a screw 25, the lower end of'which is headed, as at 26, which seats in an aperture provided therefor made in the adjacent meeting faces of the journal blocks 20. By turning the hand wheel 24 upon either or both sides of the apparatus, `as shown in'Fig. 2, the shaft 22 Lmay be given an angular vadjustment which will throw the forming wheel 'carried thereby out of a vertical plane. Uponl the end of the shaft 22 is a crank arm 22a which, `after the requisite adjustments have been'made, and the molding Y has been inserted, is the only portion ofLmy device which requires manual manipulation. VThe forming wheel carried Vby the shaft 22 Misshown lin-detail in Fig. 3, and consists of'a "circular member or block 27 secured and fixed in any desired way to the `shaft 22. The in-4 ner edge 'of thisblock is beveled, asV at 28, at

the inner end of whichbevel' portion is a straight vertical face 29 terminating centrally i finV an annular groove 30. The inner wall of the annular groove extends beyond the plane of the'face-29 and so as 'to `form a hub31 which enters a central depression in the coinor any Vsuitable metalV and I prefer to cover the face portions29 and 29a and portions of the bevel 28 and 28a with facings of copper 35 or other soft metal 'which will both protect the wood or Vforming wheel and the edge or corner molding which is shown in Fig. 3 at 36.y The member 33, by manipulation of the thumb screws 34, can be adjusted to receive mol-ding 36 of divers sizes.

It will be found that the proper adjustment of the members27 and 33 to the size of corner or edge molding to be operated upon is lmaber 27. These members may be made of wood teriafl to the proper functioning of the appa-Y ratus as this central wheel must grip theV molding suffliciently tov carry. it through the apparatus but not so tight that the central forming wheel will not readily receive and re leaseV thebead of the molding.

To further strengthen the construction I place upon the sills 8 between the standards l0 spacer blocks 37 and inside of these spacer blocks and extending respectively to adjacent the cross sills 9 are rail ieces 38 provided with anupwardly extending tongue 39. Sliding upon these rail pieces are side members 40 of the carriages for the lateral forming wheels. The outer ends of the said pieces 40 are joined and secured together by the headers 4l, and in the centers of these headers 41 are interiorlythreaded bores for co-operating with the threaded end of cranks42 which extend through and are revolubly secured to t-he end sills 9. One of these bars 40 ofeach of .the screws 43 these forming wheelsrmay be given an angular YadjustmentV with respect to thevertical plane. i The lateral forming wheels may conveniently consist of a central plate 45a on oppo-V site sides of which are centrally beveled. ortions 45b which serveto openth'e edges o the corner molding to a greater orV less extent Vin accordance with the adjustment of the various forming wheels. Y In order to hold the beadto theiateral i j i wheels I hinge upon the standards 10 at one side of the structure cross rails 46. The ends of these cross rails opposite to the hinge are provided with recesses 46a which engage with retractable bolts 47 when the cross rails are in horizontal position. Upon the bottoms of the cross rails 46 are preferably mounted flanged idler rollers 48 which serve to force the corner molding toward the lateral forming wheels when that shall be desired.

It will now be seen from the foregoing description, taken in connection with the drawing, that I have provided a device comprisin an arrangement of a central and two latera forming wheels, the central forming wheel having a bodily vertical and independent angular adjustment and the lateral forming wheels having each bodily horizontal and independent angular adjustments, whereby the spacing of these wheels with respect to each other and their angular relations may be modified, thereby permitting me to bend a corner molding in almost any desired curvature and at the same time opening its edges atany desired angle with each other and the center of the molding.

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

l. A device for bending corner molding comprising a central and two lateral forming wheels with independent means for adjusting the respective wheels in the same plane, and independent means for adjusting each of said wheels at an angle with said plane.

2. A device for bending corner moldin comprising a wheel provided with means a justable to receive and develop traction with beads of molding of diierent sizes, and a plurality of other forming wheels having independent means for adjusting them within and at an angle to the plane of said wheels.

3. A device for bending corner molding comprising a wheel provided with means to receive and develop traction with the bead of a molding and a plurality of other forming wheels having independent means for adjusting them within the plane of said wheels.

4. A device for bending corner molding comprising a central clutch for engaging and developing traction with a bead of the molding and a plurality of other forming wheels co-operable with said clutch wheel, carriages bodily movable in a common plane within which carriages said forming wheels are respectively journaled and means carried by said respective carriages for shifting the plane of rotation of said wheels.

5. In a device for bending Corner molding in combination with a plurality of bodily movable forming wheels a rotatable clutch wheel mounted to provide bodily movement and a shifting at an angle with such bodily movement. Y

JOSEPH W. FARB.

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