US1251018A - Top plate for registers and ventilators - Google Patents

Description

UNTTED sTATEs PATENT oEEicE.

HOWARD S. HART, 0F NEW BRITAIN, CONNECTICUT, ASSIGNOB T0 THE HART & COOLEY COMPANY, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

Specification 'of Letters Patent.

Patented Dec. 25, 1917.

Application led August 9, 1917. Serial No. 185,250.

To all whom it may concern.'

Be it known that I, HOWARD S. HART, a citizen of the United States of America, residing at New Britain, Conn., have invented anew and useful Top Plate for Registers and Ventilators, of which the following is a specification.

My invention relates to an improved top plate construction for registers or ventilators or the like.

An object is to provide an improved construction and arrangement of parts wherein beam members are so formed and placed as to coperate with a perforated top plate to produce a register ventilator plate construction of light weight of pleasing appearance and at the same time capable of sustaining heavy weights.

In the accompanying drawings Figure 1. is a plan view broken away. Fig. 2, is a sectional view on the plane of the line 2-2 of Fig. 1.

In the drawing l represents the border of a top plate Jfor a ventilator. In order that the plate should function efliciently as a ventilator plate it is necessary that it should be provided with openings or perforations 2, 2 to permit the free passage of air, either warm or cold. In the structure shown, diamond or checker shaped openings 2, 2, are formed in a sheet metal blank by punching, which leaves a net or lattice-work of intersecting cross bars 3, 3, 3, extending between the borders. With this structure the diagonals of the diamond-shaped openings are parallel with the sides or ends of the plate. The intersecting portions of the bars 3, 3, 3, are shown at 4, 4. In order to increase the open space and add to the appearance and strength of the ventilator plate, the sides of the bars 3, 3, 3, are preferably bent downward in the form of arches to form stiftening flanges.

A large triangular opening 5 may be provided to receive a slat openin knob from below when said top is used with a register box having slats, such a box being too well known torequire illustration.

In order that a weight greater than that capable of being held by the plate alone may be sustained, beam members 6, 6, are provided which coact with the top plate ars to aiord added strength. Any suitable means may be provided for supporting the beam ends. In the preferred structure shown, the ends are provided with tongue portlons 7., 7, suitably secured to the lower part of the border by angle brackets 8, 8, which have slotted openings 10 to receive the tongue portions 7, 7, of the beams 6, 6. The brackets 8, 8, are positioned on opposite sides of the top plate, and the slots 10 are so placed as to be in alinement with a straight line passing through the diagonals of the diamond-shaped openings between the opposite borders. The top edge of the beam 6, is provided with notches 9, 9, adapted to receive the junction portions 4, 4, of the bars 3, 3, 3. The top edge of the beam should not project above the top part of bars 3, 3, 3. Itis only necessary that thetop edge of the beam extend for a su'llicient distance above the seat of the notched portion 9 to prevent buckling or lateral deflection of the beam, this latter feature being one of importance. The brackets 8 may be secured to the top plate by Welding, rivets or in any well known manner.

It is obvious that it is not essential that the top edge of the beam should project into every opening in alinement between the borders, it being suiiicient for the purpose of my invention that it project into only a sufficient number to maintain said beam in an upright position on edge, to thereby prevent buckling, sliding, or lateral deflection of said beam.

For the purpose of my invention openings of various shapes may be used, it being only necessary that when the edge portion of the beam projects within the opening that it will furnish a side support to prevent displacement of said beam.

Various changes and modifications may be made without departing from the spirit and scope of my invention. I claim l. A top plate for Ventilating purposes, comprising a border, a middle portion comprising interconnected cross bars ext/ending angularly from and connecting adjacent borders and forming diamond-shaped openings whose diagonals extend substantially parallel to the borders,va beam member, means secured below the border on opposite sides of said plate for supporting said beam at its ends, said beam having lnotches onV the upper edge to form between said notches an upward projection arranged to project into one of the openings aforesaid to hold the middle portion of said beam against deflection. l

2.' A sheet metal top plate for ventilators including a border portion, a middle portion having a plurality of openings and bars crossing each other and extending from border to border, a reinforcing beam arranged edgewise underneath said plate, a projection upon the upper edge of said beam projecting into one of said openings Whereby 'said beam is maintained in its edgewise position by engagement With the sides of said opening` 3. A top plate for ventilators, comprising a border portion, a central portion having openings and cross bars surrounding said openings extending parallel with the respective diagonals of said plate and connecting adjacent borders thereof, a beam arranged edgewise beneath said plate and having its ends carried-by opposite sides of the plate, said beam having notches on the upperedge thereof receiving portions of said cross bars whereby said plate is elfectively reinforced and said beam is maintained in edgewise position.

4. A sheet metal ventilator plate comprising a border and a central portion having a plurality of openings therein, in combination with a bracing beam, means secured beneath the border for supporting the said beam ends in edgewise position, a projecting lug on the upper edge of said beam adapted to project into one of said openings whereby said beam is maintained in its bracing position against buckling or lateral deiection.

5. A top plate for ventilators comprising a border, a plurality of cross bars connect- Y ing adjacent sides, said cross bars forming a perforated central portion, a reinforcing beam extending between opposite sides of said border, brackets secured beneath the plate and having openings therein to receive the ends of said beam in edgeWise position, said beam having a notch in the upper edge thereof of suiiicient size to receive an intersecting portion of said cross bars to thereby hold said beam from lateral or longitudinal deection and to strengthen said top plate.

6. A sheet metal top plate for ventilators including a border portion and a middle portion having a plurality of openings and bars crossing each other and extending from border to border, a reinforcing beam arranged edgewise underneath said plate, a plurality of projections upon the upper edge of said beam extending into adjacent openings between intersecting bar connections, whereby the beam is held against lat-eralor longitudinal movement by the side walls of said openings.

7. A top plate for ventilators comprising, a border, a plurality of cross bars connectinv adjacent sides of the border and forming a perforated central portion and a reinforcing beam supported edgewise beneath the perforated central portion of the top plate and having a projection on the upper edge thereof extending into an openin between adjacent intersecting cross bars W 1ereby said beam is held against lateral or longitudinal movement by the side Walls of said openinf.

D HOWARD s. naar.

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