US1459994A - Gas heater - Google Patents

Description

.lu-ne 26, 1923.

H. H. SANFORD GAS HEATER Filed May 29. 1922 I 3 SheetSSheet 2 Jung 26, 1923.

I H. H. SANFORD GAS HEATER Filed May 29, 1922 3 sneek-sheet s Patented dune Z6, l923l HENRY H. SANFRD, 0F MANSFEELD, OHIO.

ons HEATER.

Application filed May 29, 1922.

To all w hom t may cof/wem Be it known that l, HENRY H. SANFORD, a citizen of the United States, residing at lvlansield, in the county of Richland and State of Chio, have invented certain new and useful Improvements in Gras Heaters; and I do declare the following to be 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 improvements in gas heaters and moreparticularly to those of the type employing a plurality of'incandescent radiants restingv against the front side of a fire back mounted within a suitable casing, one object of the invention being to provide a fire back which is movable upwardly when inserting or removingthe radiants but one which is normally lowered to hold said radiants in place.

A further aim of the invention is to pro vide for spacing the lire baclr from the bach and top of the casing to provide an air circulating passage, taking advantage of waste heat which would otherwise radiate rearwardly and upwardly from said fire back, for the purpose of heating air to be discharged from the upper end of the casing.

The invention. is designed to be inset in a wall and a hood or visor is employed at the upper end of the casing, to prevent any dust rising with the hot air from soiling the wall above the heater, a further aim being to provide extremely simple, yethighly etlicient means for securing the hood or visor detachably in place.

A still further object is to provide for spacing the casing of the heater from vertical and horizontal studs in the wall within which it is inset.

With the foregoing and minor objects in view, the invention resides in the novel subject matter hereinafter described and claimed, the descriptive matter being supplemented by the accompanying drawings.`

Figure l is a front elevation of a heater constructed in accordance .with my invention.

Figure 2 is a vertical transverse sectional view as indicated by line 2 2 of Fig. l.

Figure 3 is a vertical section on line 3 3 Serial No. 564,466.

of Fig. 2, looking in the direction of the y arrows.

Figure 4 is a horizontal section on line 4-4 of Figs 2 and 3.

Figure is a detail horizontal section as indicated by line 5 5 of Fig. 3.

Figure 6 is a disassembled perspective view showing the visor and the upper portion of the casing in juxtaposition.

Figure 7 is a perspective view illustrating the fire back and its supporting shelf juxtaposed.

Figure 8 is a perspective view showing the lire baclr in place upon its supporting shelf.

Figure 9 is a perspective view of onefof the side plates which extend forwardly from the vertical edges of the tire back to the front or the casing. j

In the drawings above briefly described, the numeral l designates a rectangular casing which is preferably covered with asbes-Y tos or other insulating material, said casing being closed at its upper, lower and :vertical sides and at its back, while its front is partially open, being provided with a cast metal front plate 2 which is of a size to exi tend beyond the sides of the casing, being curved rearwardly at said sides as shown. rlhe upper end of the plate 2 is formed with hot air outlets 3,' and the lower portion of said plate is formed with air inlet slots l, some of which may well be in a supplemental plate 5 detachably secured to the plate 2 over an elongated opening 6 through which access may be had to a suit able burner 7 in the lower portion of the easing. Between the removable plate 5 and the openings 3, plate 2 is formed with a relatively large opening 8 and at the vertical edges of this opening, other openings 9 are preferably formed to permit escape of heat. The plate 2 may be secured to the casing in any preferred manner, preferably by means of bolts l0 and the supplemental plate 5 may he similarly secured to the plate 2. The handle l2 of the gas valve `with which the burner 7 is provided, and an adjusting handle 13 for the air mixer 11i o'r' said burner, preferably extend forwardly through certain of the slots l or through other openings provided for the purpose.

As above stated, the easing is adapted to be inset in a wall and in order to space its bottom and vertical sides from horizontal and vertical studs 15 and 16 respectively, with which the wall is provided, l provide channel-shaped sheet metal spacers 17 `having outstanding flanges 18 which are suitably secured to said bottom and vertical sides, being adapted to bear against the studs as shown in` Figs. 2, 3 and Ll. To prevent any dust rising with the heat from soiling the wall above the heater, an appropriate visor i9 is provided, the rear edge of said visor having'a plurality of notches 2O formed therein and integral stirrups 21 extending `rcross said notches below the upper side of the visor. In front of the stirrups 21 the visor 19 is formed with depending lugs 22, each having a reduced end and a downwardly facing shoulder 24. The stirrups 2-1 are adapted toengage forwardly facing hooks 25 formed on the' upper end of the front plate 2, the bills of said hooks being received in the notches 20, while the reduced ends 23 of the lugs 22 are adapted for reception in openings 26 formed in the rearwardly curved upper portion of said plate. This arrangement effectively holds the visor in place, yet by lifting the front edge of said visor and moving the latter forwardly, it may be quickly and easily removed, it being understood that a reversal of this opera* tion is employed when applying saidvisor.

Extending horizontally across the casing 1 behind the lower' edge of the opening 8 and spaced from the back wall of said casing is a horizontal shelf 28 having openings 29 above the several jet openings of the burner v7, whereby to permit flame from this burner to rise into and heat the hollow radiants 30, which rest upon the shelf between parallel ribs 3l formed on the saine. The shelf 28 is preferably formed at each of its ends with a pair of integral studs 32 which as seen in Figs.v 3 and 4l, extend outwardly through openings in the vertical sides of the casing, whereby to secure said shelf in place.v The projecting outer ends of these studs are preferably received in the channel spacers 17 with which the casing sides are provided, so that said spacers will `prevent, the studs from striking the wall and interfering with proper insertion of the heater into said wall, when first installing the device. At points spaced inwardly from its ends and spaced behind its front edge, shelf 28 is provided with upstanding ears A33 to which a pair of vertical side plates 34 are secured by screws or the lilre'35, said plates extending forwardly to the vertical edges of the openingl 8, which edges are preferably flanged as at 36 to engage the front edges of said plates, as shown in Fig. l. At their upper ends, the side plates 34 rest in angular seats 37 formed at the inner ends of bracket plates 38 which are secured to and lextend inwardly from the vertical sides of the casing. Either separa-te from or integral with the vertical side plates 34, is a bottom plate 89 which extends from the front edge of theshelf 28 to the lower edge of the opening 8. The three plates 34 and 39 pre vent late al and downward radiation of heat from the radiants 30 and thus insure that this heat shall be thrown forwardly.

The numeral 4:0 designates a vertically positioned lire Aback whiclrrests upon the shelf 28 behind the radiants 30, said shelf having a rear rib l1 to co-operate with vertical guide flanges i2 on the baclr of the casing, in holding said tire back against rearward movement. The upper end of 'the hre back is provided with a forwardly eX- tending flange t3 extending entirely to the plate 2, at the upper edge of the opening 8, while the vertical edges of said 'lire baci; are formed with vertical flanges 44 which contact with the plates let and shield the latter from a great deal of intense heat which would otherwise be thrown against them by the endmost ofthe radiants 30.

it the juncture of the flange L13 with the lire back d0, a channel i5 is formed throughout the width of said fire back,` said channel being adapted to receive lugs 46 whichextenti upwardly from the radiante 30. Attention may here be directed to the fact that whereas it is customary to raise the radiants and swing their lower ends forwardly, in order to remove them and to reverse this operation when applying the radiants, I do not use this method of securing them in place. rllhe entire lire bachV 40, although being mounted rigidly, is not secured to any parts and may-be readily raised suiiiciently to permit the lugs i6 to be inserted into the channel l5 or into a plurality of openings which might be used in place of said channel. rlhus, the radiante are more effectively held in place and they cannot be accidentally detached, so that danger of breakage is minimized. i

In addition to the features above pointed out, attention is directed to the fact that by pushing upwardly upon the fiange 43, after removing the radiante 30, the front end of the fire back 40' is forced to move forwardly so that it may be easily grasped and removed, it being therefore a very simple matter to gain access to the back of the casin T for the purpose of driving screws or the like al-'T therethrough to secure Athe casing to the sheathing of the wall into which it is inset (see Fig. 2).v Also, it will be observed that the spacing plates d2 and the side plates 34, hold the lire back 4.-() in spaced relation with the back and vertical side walls of the casing, leaving free passages throughwhich hot air may travel to be discharged through the openings' 3 and 9.V This hot air is radiated from the tire back of the burner to some extent and its volume is constituted partly by fresh air entering the yopenings in the lower portion of the casing and being heated by contact with interior parts.

n Particular attention is invited to the novel manner of securing the visor 19 in place; to the construction and mounting of the lire back 40, permitting vertical movement thereof in securing the radiants 30, and to the spacing of the fire back from 'the casing for the purposes set forth. Also, the man ner of mounting the shelf 28, including the studs which extend through the sides of the casing into ythe protecting and spacing members 17, constitute rather important features.

Since excellent results may be obtained from the exact details disclosed, they are preferably followed. lt is to beunderstood however that within the scope of the invention as claimed, numerous minor changes may be made.

l claim:

l. A heater comprising casing having an opening in its front and provided with a horizontal support extending acrossits interior, a burner below said support, a fire back resting on said support and free to move upwardly therefrom, and a plurality of radiants resting on said support in front of said [ire back, said lire back and radiante being relatively movable and being provided with co-acting means for securing the radiants in place when the fire back is lowered and for releasing said radiants from engagement with the lire back when said fire back is raised.

2. A heater comprising a casing havingY being relatively movable, said radiants having upwardly extending lugs on their upper ends, said lire back being recessed to receive lsaid lugs when lowered and to free said radiants when raised.

3. A heater comprising a casing having an opening in its front and vertical plates extending rearwardly from the vertical edges of said opening adjacent the vertical sides of the casing, a horizontal shelf ex tending across lsaid casing adjacent the lower edge of said opening, a burner below said shelf, a fire back resting on and rising from the rear portion of said shelf, the back of the casing being provided with means for spacing said fire back therefrom, a horizontal flange integral with and extending forwardly from the upper edge of said fire back to the upper edge of said opening, and vertical anges extending forwardly from the vertical edges of said iire back at the inner sides of said vertical plates, said shelf and fire back being adapted for holding a plurality of radiante in place 4f. A device of the class described comprising a casing, a shelf extending horizontally across said casing and having integral studs on its ends extending through the vertical casing sides, and channel-shaped guards secured to the outer faces of said casing sides and receiving the outer ends of said studs.

5. The combination with a heater casing having a rearwardly extending portion overlying its top; of forwardly facing hooks on said rearwardly extending portion, the latter having openings in front of said hooks, a visor notched at its rear edge to receive said hooks and provided with stirrups spanning the notchesA for engagement with said hooks, and depending lugs on said visor received at their lower ends in said openings.

In testimony whereof` l have hereunto set my hand.

HENRY H. SANFORD.

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