US1987953A

US1987953A - Supporting hook for sliding leaf extension tables

Info

Publication number: US1987953A
Application number: US690736A
Authority: US
Inventors: Fox Martin
Original assignee: Seng Co
Current assignee: Seng Co
Priority date: 1933-09-23
Filing date: 1933-09-23
Publication date: 1935-01-15
Anticipated expiration: 1952-01-15

Description

M. FOX 1,987,953 SUPPORTING J'IOOK FOR SLIDING LEAF EXTENSION TABLES Jan. 15, 1935.

Filed Sept. 23, 1935 Q I M & n]

|i ,7 N &

Patented Jan. 15, 1935 J:

- "SIUJPPORTING nooK FOR SLIDING LEAF I EXTENSION. TABLES 1 Martin Fox QChicago, 111;, assignor to The Seng Company, Chicago, Ill.

- I Application September 23, 1933, Serial No. 690,736

6 Claims. (Cl. 31156) seat or that part of the; supporting hook with My invention relates to extension tables of that special type in which the extraleaves are carried at the outer ends of runners or bars slidable in the frame of the table for housing said leaves under the ends of the top, and in which means are provided for supporting the movable parts with the leaves in extended position coplanar with the top, in the present instance embodying certain modifications or improvements in respect to the metal fixture or hook of "the leaf supporting means described and claimed in my prior patent, No. 1,875,295, dated August 30', 1932.

Although it is obvious that vertical adjustment of the leaf supporting hook shown in the patent referred to may be "effectedby the use of slots instead of screw 'holesthis ordinary or wellknown expedient is not'entirely'satisfactory and consequently I have devised improved means for adjustably attaching the hook to the table frame whereby to facilitate alignment of the extension leaves'with'the top in the'assembly of the parts of the extensiontable or'while it is in use, and this is one of the novel features ofmy present invention. 3"

As a further improvement I have modified the which the pin on the slide'bar engages when the leaf is extended to effect an interlockingengagement which will prevent vertical movement or tilting of the leaves when pressure is exerted thereon. f

With these main objects-in view-my invention contemplates the verticaladjustment of the leaf supporting hook by means'of a cam working in a recess therefor in the attaching plate of the hook to cooperate, withthe attaching screws passing through slots in the attaching plate, and the interlocking engagementofth e pinion the slide bar is accomplished'by forming a slot in the hook to receive said pinjall as hereinafter fully described and more specifically set forth in the appended claims. I

In the drawing forming apart of this specificationz Figure 1 is alongitudinal sectional 'viewof one end of a'sliding leaf extension. table showingthe "application of ,7 the improved form of leaf supp rtin hook, Fig. 2 isa detail front elevation of the hook attached to the end rail of the table frame.

Fig. 3 is a detail of the hook in side elevation. Fig. 4 is a detail front elevation. Fig. 5 is a detail view of the cam for adjusting the hook on the table frame, and

Fig. 6 is a view in elevation showing a modification of the hook for locking engagement of the pin on the slide bar. I

The leaf supporting hook of my invention is applied to that type of sliding leaf extension ta bles in which the leaf 10 is secured on the outer end of one or more bars 11 slidable in slots 12 and 13 in the end and center rails 14 and 15 of the supporting frame, the side rails 16 of which latter are cut away as usual below the opposite ends of the top 17 to receive the extension leaves in housed position and the top reinforced by a crosspiece 18 secured between the aforesaid side piecesof the frame. In this general type of extension table the leaves carried by the bars are slid outwardly from housed position below the top and when raised on a line with said top are supported by a member on the slide bars engaging a companion member on the supporting frame of the table, as for instance pin 19 on the slide bar and metal fixture or hook 20, the latter being attached to the end rail of the table at one side of the slot 12 therein.

As shown in my prior patent andin Figs. 1 and 3 of the accompanying drawing the metal leafsupporting fixture with which the pin on the slide bar engages consists generally of an attaching plate 21 from one side of which projects a hooklike supporting member having a vertical rib or flange 22 and a curved portion 23 at the upper end of said flange, the curved portion extending inwardly towards the flange at its lower end to form a pin receiving seat 24 with an entrance slot 25 between the bill of the hook and outer edge of the vertical flange. This metal fixture or supporting hook when attached to the end rail of the table frame at one side of the slot 12 receives the pin 19 on the slide bar 11 supporting the leaf 10 to align theleaf with the top 17, as shown in Fig. 1, and it will be understood that in housing said leaf below the outer end of the top upon the upper edges of the side and end rails it is necessary only to slightly lift the leaf and moveit outwardly and downwardly for disengagement of the pin from the hook after which the leaf and its supporting bar may be slid inwardly. It will be further understood that the location of the metal fixture or supporting hook onthe end rail is such as to position the extenplate of the hook with slots through which the attaching screws pass I have devised an improved means of adjustment, forming one of the novel features of the present application.

In the present instance the attaching plate of the hook in addition to the slots 26 receiving the screws 27 is provided centrally with a slot or elongated recess 28 extending inwardly from the outer edge thereof, and within this slot or recess is placed a cam 29 secured to the side rail'by screw 30, whereby turning of said cam after the screws 27, 27 are loosened will raise or lower the fixture as desired. Any form of cam may be employed, the one shown being a disk closely fitting within the recess 28 and having the screw hole 31 forming the fulcrum of the cam at one side of the center thereof, and for conveniently turning said cam by means of a screwdriver it isprovided with a transverse slot or rectangular groove 32. The operation of the cam is obvious, for in the aligning of the extension leaf either in assembling the table or should said leaf get out of alignment during the use of the table it may be readily adjusted by manipulation of the cam and tightening the holding screws.

To overcome tendency of the leaf to tilt when extended on a line with the top I provide the supporting hook with a retaining slot 34 extending from the seat 33, as shown in the modification Fig. 6, otherwise the hook is identical to what has been already described; that'is to say, the attaching plate is provided with the recess 28 to receive the adjusting cam and with slots 26 to receive the holding screws 27, and in this instance also the fixture or hook is provided with rib or flange 22 against which the pin on the slide bar strikes and is guided thereby into the entrance slot when the leaf is moved from housed to extended position. By providing the retaining slot as a part of the seat for the pin on the slide bar the said slot will act as a lock to hold the movable parts of the table against vertical movement when the leaf is in extended position, and of course in this form of hook the pin 19 is properly located on the slide bar to permit positioning said pin in the slot when the leaf is against the table top. It will be noted that in this modified form of metal leaf-supporting hook to receive the pin on the slide bar for supporting the leaf against vertical movement, said hook is shaped to form the curved entrance slot terminating in a seat for the pin and the slot extended horizontally outward, so that when the pin is moved into this horizontal slot it will be confined and held against vertical movement in either direction. According to the original form of my hook, shown in Fig. 3, the curved entrance slot merely supported the extension leaf in place against downward and outward movement but did not prevent upward tilting of the leaf in extended position as now provided for by the extension of the curved entrance slot to lock the pin and its leaf supporting bar; it being understood that the slot extension in which the pin is locked is only a little wider than the diameter of said pin.

I claim:

1. A metal fixture or hook for slide leaf extension tables comprising an attaching plate having a supporting member projecting outwardly therefrom to cooperate with a member on the table leaf slide, slots in the attaching plate to receive holding screws, and a slot or elongated recess in said attaching plate; together with a cam fitting within the recess and engaging the diametrically opposite walls thereof to provide for vertically adjusting the fixture on the frame of the table preliminary to tighteningthe holding screws.

2. A metal fixture or hock for: slide leaf extension tables comprising an attaching plate having a supporting member projecting outwardly therefrom to cooperate with a member on the table leat slide; slots in the attaching plate to receive. holding screws, and a recess in said attaching plate; together with a cam in the form of a plain disk fitting within the recess and engaging the walls thereof to provide for adjusting the'fixture on the frame of the table preliminary to tightening the holding screws, and means associated with the cam for turning the same.

3. A metal fixture or hookv for slide leaf extension tables. comprising an attaching plate having a supporting member projecting outwardly therefrom to cooperate with a member onthe table leaf; slide, slots in the attaching plate to receive holding screws, and a recess in said attaching plate; together with a cam fitting within the recessand engaging the walls thereof to provide for adjusting the fixture on the frame of the table, said cam being in the form of a disk with a screw hole at one side of the center thereof and having a transverse groove to receive a screwdriver for turning the same.

4'. A metal fixture or book for slide leaf extension tables comprising anattaching plate, and a supporting member projecting outwardly from the attaching plate and shaped to provide a curved entrance-slot extended horizontally to receive a cooperating member on the table leaf slide, the outwardly extended portion of. the slot being of slightly greaterwidththan the diameter of the member on the table leafslide to lock it against verticalmovementin-either. direction.

5. A metal fixture or hook for slide leaf. extension tablescomprising anattaching plate, a supporting member projecting outwardly from the attaching plate and shaped to provide a curved entrance slot extended horizontally outward to receive a cooperating member on the table leaf slide, theoutwardly extended. portion of the slot being of slightly greater width than the diameter of the member on the table leaf slide to lock it against vertical movement in either direction, and means in associationwith the attaching plate for adjusting the fixture. on the frame of the table. 7

6. A metal-fixtureor hook for slide leaf extension tables compr'is'ingan attaching plate, a supporting member projecting outwardly from the attaching plate and: shaped to provide a curved entrance slot extended; horizontally outward to, receive a co-operating member on the table leaf slide and lock it against vertical. movement in either direction, and means for adjusting the fixture on the frame of the table, said means consisting of a cam fitting 'withina recess in the attaching plate. of the fixture, and slots in said attaching plates to receive holding screws..

MARTIN FOX.