US794204A - Pedestal-extension-table lock. - Google Patents

Description

PATENTED JULY 11, 1905.

E. TYDEN. PEDESTAL EXTENSION TABLE LOOK.

Patented July 11, 1905.

PATENT OFFICE.

EMIL TYDEN, OF HASTINGS, MICHIGAN.

PEDESTAL-EXTENSION-TABLE LOCK.

SPECIFICATION forming part of Letters Patent No. 794,204, dated July 11, 1905.

Application filed August 1, 1904. Serial No. 219,142.

To all whmn it may concern:

Be it known that I, EMIL TYDEN, a citizen of the United States, residing at Hastings, in the county of Barry and State of Michigan, have invented new and useful Improvements in Pedestal-Extension-Table Locks, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

This invention relates to means for locking together the separable parts of a pedestal extension-table, and particularly preventing the pedestal members from sagging apart at one end.

It consists in the features of construction set out in the claims.

In the drawings, Figure 1 is a longitudinal vertical section through the middle portion of a table embodying this invention, the two members being shown in closed and locked position. Fig. 2 is a similar view showing the parts engaged at the lower end of the pedestal and prepared for closing up at the top. Fig. 3 is a section at the line 3 3 on Fig. 1. Fig. 4 is a section at the line 4 4 on Fig. 1.

The two members 1 1 of the table comprise and have rigid with them the respective pedestal members 2 and 2, which may inclose a center leg 3, carried in the usual manner by the cross-bar 4. On one pedestal member there is at each side a rigid guide and lifting finger 5, said fingers being tapered at the outer surface and upper edge, so as to be guided into the opposite pedestal member under the abutments or stops 6 6, mounted on the corresponding sides of said opposite pedestal members. On one pedestal mem ber there is carried a forked foot-piece 7, which strides the lower end of the center leg 3 and may have upon each fork-arm a pulley or caster 8 for pressing upon the floor substan tially in the meeting plane of the two pedestal members. This foot-piece has a stem 9,

which extends upward within the pedestal member on which it is mounted, being guided in an eye 10 near the bottom, and at the upper end it is connected with the horizontal arm of a bell-crank lever 1 1, which has a fixed fulcrum on the table and has its vertical arm upstanding and connected by a link 12 with a hand-lever 13, said hand-lever being fulcrumed at its upper end close under the tabletop and depending from its fulcrum, so as to be in convenient reach for operating the device for pulling and pushing its lower end. At the lower end of the pedestal a latch 14, preferably duplicated at opposite sides of the center leg, is pivoted on the same member on which the foot-piece is mounted. These latches extend above the fork-arms of said foot-piece, and the opposite pedestal member has suitable means which the hook-noses of the duplicate latches engage for connecting the pedestal members at the bottom. A convenient device for this purpose consists of a plate 15, fastened upon the lower end of the pedestal and having a projecting stud or finger 16 for the engagement of the latch. At the upper end of the pedestal there is a forklatch having its two arms 14 14 striding the center leg and on the opposite pedestal member staples or eyes 17 17 for the engagement of such upper latch. The latches, both uper and lower, are checked, so that they do not fall below about a horizontal position,

- this being most conveniently done by a short projection 18, extending off from the latch at its pivot and stopped against the pivotbracket 19, and a similarly-operating projection (also indicated by the numeral 18 of each of the lower latches is stopped against the pivot-bracket of the latch. For lifting the upper latch 14 out of engagement with the staple 17 a pin 21 is set through the stem 9 of the foot-piece below said upper latch 14. The fork-arms of the foot-piece have each a projecting pin 20 20 in position to engage under the lower latches 14, respectively, when the foot-piece is lifted.

The operation of this device is that when the table members having been extended are pushed together in the usual manner if there is the usual tendency to sag, so as to cause the edestal members to diverge from above downwardly, the table members will come together first at the top; but the fingers 5 will engage under the stops 6, the separation of the pedestal members at the bottom being usually not to exceed one-fourth of an inch in the worst case. The operator will now push I00 the lever-handle 13 inward, thereby thrusting down the foot-piece and lifting both pedestal members at their inner side or parting plane, the fingers 5, engaging under the abut ments 6, servlng to transmit the lift from the member on which the foot-piece is mounted to the other member. This action will tend to cause the pedestal members to diverge from the bottom upward. It may bring them together at the bottom, in which case the bottom latch will become engaged; but if not the operator will now continue to push on the lever-handle 13, pushing the table members together until the lower latch is en aged. Then releasing the handle, the weight of the table will cause it to settle again at the center, and the two members being fulcrumed upon each other at their engagement at the lower latch will come together at the top and the upper latch will be engaged. For extending the table the operator will pull the lever-handle 13 outward and in so doing will lift the foot-piece and its stem 9 until the pins 20 and 21 encounter and lift the latches 14, and the operator continuing to ull on the handle 13 in the same direction wi lseparate the table members.

I claim 1. In a pedestal extension-table, in combination with the separable members of the table comprising their respective pedestal members, devices for connecting the pedestal members at the lower art; means mounted on one of the pedesta members adapted to be depressed relatively thereto for lifting the table at the middle, adapted to permit the table to be depressed after said lower end connecting devices are engaged, and separate devices for connecting the table members at the upper part.

2. In a edestal extension-table, in combination wit the separable members, comprising their respective pedestal members, automatically-engaging devicesfor connecting the pedestal members at the foot; means mounted on one edestal member ada ted to be depressed re atively thereto for ti ting said member slightly to lift it at the parting plane; means by which such member lifts the opposite member when the two members are near together and the first member is thus lifted, said lifting means being adapted to permit the table to be depressed at the middle after the connecting devices are engaged at the bottom, and separate devicesfor connecting the table members at the upperpart.

3. In a pedestal extension-table, in combination with the se arable members of the table comprising t eir respective pedestal members, means mounted upon one pedestal member adapted to be depressed at will for lifting such member at the parting lane and thereby tilting it slightly; means y which such' lifting movement is communicated from said member to the opposite member when the two members are near together; automatically-engaging devices for connecting the two pedestal members at the bottom when they meet at the bottom; separate devices for connecting the table members at the upper part, the movable element of both said upper and lower connecting devices being mounted on the same table member which has the lifting device.

4. In a pedestal extension-table, in combination with the separable members of the table and the pedestal parts pertaining thereto respectively; means for connecting the pedestal members at the lower part; means for connecting them also at the upper part; a foot-piece mounted on one pedestal member, and means for thrusting such foot piece downward relatively to the pedestal, to lift the table at the parting plane.

5. In a pedestal extension-table, in combination with the separable members of the table and the pedestal members pertaining thereto respectively; rigid abutments on the two pedestal members adapted to come into engagement, those upon one member above those of the other member as the pedestal members approach; a foot-piece mounted on the member whose abutments engage under those of the opposite member; means for thrusting said foot-support downward at will to lift the table at the center, and catches for engaging the two members at the upper and lower parts of the pedestal.

6. In a pedestal extension-table, in combination with the separable members of the table and the pedestal members pertaining thereto respectively; a foot-piece mounted upon one pedestal member; a connection extending upward from said foot-piece for raising and lowering it lever connections mounted under the table-top for operating said means comprising a hand-lever and adapted to thrust the foot-piece downward by inward push of the hand-lever; catches for connecting the two pedestal members at top and bottom, and means by which the upwardly-extending foot-piece connection disen 'ages the latches when l'fted by outward pu of the hand-lever.

7. In a pedestal extension-table in combination with the separable members of the table and the pedestal parts pertaining thereto respectively; a latch connecting the pedestal members at the u per part and a latch connecting them at tl f mounted on one pedestal member and adapted to be thrust downward relatively to the edestal to lift the table at the parting plane; ever connections mounted under the tabletop and connections extending upwardly from the foot-piece to said lever connections, and abutments on said upwardly-extending part engaging under the latches to lift them when the foot-piece is lifted by said connection.

e lower part; a foot-piece.

8. In a pedestal extension-table, in combination with the separable members of the table and the pedestal members pertaining thereto respectively; a foot-piece mounted on one pedestal member having a stem extending upwardly in said member; lever connections mounted under the table-top in the same member for o eratin said foot-piece to thrust it down and lift it; latches pivoted on the same member and means on the opposite member for engagement of the latches, the

stem of the foot-piece having means encountering the latches to lift them When the footpiece is lifted.

In testimony whereof I have hereunto set my hand, inthe presence of tWo Witnesses, at Hastings, Michigan, this 16th day of July,

EMIL TYDEN. Witnesses:

A. 0. BROWN, F. W. STEBBrNs.

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