US739790A - Hand-hole plate. - Google Patents

Description

PATENTED SEPT. 22, 1903.

' L. RAUHAUSER.

HAND HOLE PLATE. AI'PLIUATIOH PILBD A123. 13. 1908.

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UNITED STATES Patented September 22, 1903. i

Louis nAuHAusna-or BROOKLYN, NEW roan;

HAND-HOLE PLATE.

SPEGIFIGATION forming part of Letters Patent No. 739,790, dated September 22, 19b3,

Griginal application filed January 27, ons, serial to. 140,699, Divided and this application filed April 13,

1903. Serial no. 152,343. 7 (No model.)

To all whom it may concern.-

Be it known that I, LOUIS RAUHAUSER,-2L citizen of the United States, and a resident of Brooklyn, in the county of Kings and State have invented certain new and useful Improvements in Hand-Hole Plates, of which the following is a specification.

This application is a division of my application for Letters Patent forimprovements in steam-generators, filed January 27, 1903, Serial No. 140,699.

The invention relates to improvements in hand-hole plates for steam-generators and the like; and it consists in the novel features, arrangement, and combinations of parts hereinafter described, and particularly pointed out in the claims.

The object of the invention is to provide a novel construction of hand-hole plate adapted to be inserted through a round hole less in diameter than the diameter of the plate, the latter when its parts are together being greater in diameter than the diameter of said hole.

The invention is particularly applicable for use in steam-generators employing tubes for the passage of the products of combustion or water and in which a separate hand-hole plate is to be provided in line with each of said tubes.

the detailed description hereinafter presented, reference being had to the accompanying drawings, in which- Figure 1 is a vertical section through a portion of a steam-generator and illustrates a part of a water-leg thereof leading toone of the usual tubes, the outer plate of the waterleg in line with said tube being equipped with a hand-hole plate constructed in accordance with and embodying the present invention. Fig. 2 is an end view of the inner end of one of the hand-hole plates detached from its securing means; and Fig. 3 is an elevation taken from the right-hand side of Fig. 1 and illustrates the said hand-hole plate in position, the dotted line 1 l of Fig. 3 indicating the section on which Fig. 1 is taken.

In the drawings, 10 designates a portion of 5c ausual-construction of water-leg, comprising latter of which the tube plates 11 12, to the The invention will be fully understood from 13 is secured in the usual manner, while the plate 11 is an exterior exposed plate and contains an aperture 14 in line with the tube 13.

The present invention pertains specifically to a novel construction of hand-hole plate adapted for closing the aperture or hole 14 in the plate 11, but is not, of course, confined to any special construction of water-leg 10 or to any special construction of steam-genera tor, the water-leg 10 and tube 13 being illustrated for the purpose of more fully disclosing the utility and operation of my invention.

The hand-hole plate comprises the two disksections 15 16, which when brought together form a complete disk having an outer circular projecting portion 17 to enter the hole 14 in the plate 11 and an inner annular flange 18 to press against the inner surface of said plate around and exterior to the hole 14 therein. The disk-sections 15 16 are provided with the overlapping flanges 19 20, respectively, which are centrally apertured to receive the bolt 21, the latter carrying at its inner end the concave head 22 and at its outer end passing through the frame 23 and receiving the nut 24. The flange or section of the disk-section 16 is at one edge formed with the recess 25 to receive the correspond ingly-shaped lug 26, formed on the other disksection, 15, this recess and lug being provided to effect the interlocking of the sections 15 16, so that when they are together they will at their outer edges define a circle.

The purpose of constructing the hand-hole plate of the sections 15 16 of the character described is to enable the introduction of said .plate through the round hole 14 in the plate 11, the diameter of this hole 14 being less than the diameter of the hand-hole plate when its parts are together, as shown in Figs. 1 and 3. In introducing the hand e hole plate through the hole in the plate 11 I first place the section 16 upon the bolt 21 and insert the head end of said bolt and said section 16 through the hole 14 in said plate 11, tilting the section 16 to some extent, so as to work it through said hole, and I then allow the section 15 to slide down on the bolt 21 and work it through the hole 14 in the plate 11, and thereafter 1 match the sections 15 16, so that they have the position illustrated in'Fig. 2, and then draw said sections outwardly against the inner wall of the plate 11 and secure all of the parts together and in position by means of the nut 24. and frame 23. The hole 14 in the plate 11 is large enough to admit a persons hand, and hence in applying the sections 15 16 through said hole the bolt 21 may be passed inwardly until the head 22 thereof actually enters the adjacent tube 13. The space between the plates 11 12, forming the water-leg, is adequate to admit of the tilting of the bolt 21 and sections 15 16 duringtheir introduction. through the hole 14, and hence with the hand-hole plate made of the 'sections 15 16 I am enabled to apply the handhole plate against the inner surface of the plate 11 in an efficient and convenient manner. The hand-hole plate of the construction described is also capablev of being removed from position in a convenient manner by simply reversing the operations followed in its application to position. The head 22, carried by the bolt 21, is made concave, as shown in Fig. 1, and this head receives and fits upon a hub 27, formed by an inwardly-projecting portion of the sections 16, and when this hub 27 is within the head 22 it prevents any accidental separation of the sections 15 16 from each other and serves to hold the lug 26 of the section 15 into the recess 25 of the section 16. The head 22 engages a substantial portion of the inner surface of the hand-hole plate and enables said plate to be very firmly secured against the inner surfaces of the plate 11 with the circular projecting portion 1'7 within the hole 14.- of said plate 11.

What I claim as my invention, and desire to secure by Letters Patent, is

1. The hand-hole plate comprising the sections 15, 16 having the overlapping central portions 19, 20, the bolt 21 passing through said central portions and having a head at its inner end to engage said sections, the frame through which the outer end of said bolt passes, and the nut for said bolt; substan tially as set forth.

2. The hand-holeplate comprising the sections 15, 16 having the overlapping central portions 19, respectively provided with the interlocking recess and lug 26, the bolt 21 passing through said central portions and having a head at its inner end to engage said sections, the frame through which the outer end of said bolt passes, and the nut for said bolt; substantially as set forth.

3. The hand-hole plate comprising the sections 15, 16 having the overlapping central portions and matching inner portions forming the hub 27, the bolt passing through said central portions and having the concave head 22 at its inner end to fit upon said hub, the frame through which the outer end of said bolt passes, and the nut for said bolt; substantially as set forth.

4. The hand-hole plate comprising sections having the outwardly-projecting portion 17 set inwardly at its edges from the outer edges of the plate so that said portion 17 may enter the hole to be closed, and the overlapping central portions 19, 20, combined with the bolt 21 passing through said central portions and having a head at its inner end to engage said sections, the frame through which the outer end of said bolt passes, and the nut for said bolt; substantially as set forth.

Signed at New York, in the county of New York and State of New York, this 11th day of April, A. D. 1903.

LOUIS RAUHAUSER.

Witnesses:

ARTHUR MARION, CHAS. O. GILL.

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