US48446A

US48446A - Improved water-door for furnaces

Info

Publication number: US48446A
Authority: US
Publication date: 1865-06-27
Anticipated expiration: 1882-06-27

Description

Y' To all'whom ,it may concern.'

.UNITED I dS'Tivrrzs PATENT Q'FFICE. r

Josera ROGERS, oF NASHUA, NEfWuA'MrsHIRm t 4 "iMPRovED vwA'rlaR-@DQ'ou Fon- FURNACES. p.

" Specification forming part ot Letters Patet No. 48,446, dated June 27, 186.5.

Nashua, in the county of Hillsborough and State of New Ham pshire,'have invented a new aud'useful Improvement inr Doors forFur-" vhaces; audI dohereby declare that the following is a fullizclear,amlexactdescription. thereof, Vwhich will enable othersskilled in the art to make and use' the same, reference being `-'had ta the accompanying drawings, forming 'part of'.tliisspecitication, in whichl y Figure lis au external viewof myiiivention;

Eig. 42, a horizontal section of the same, taken inthe line .fr w, Fig. 1 Fig.'3, a vertical sec# i tion of the same', takenim the line y y, Fig. 2.

Similar letters of `reference indicate like parts.

' Furnace-doors are at present constructed 'of Y cast-iron shellorcase lined .or tilled with brick.- In ashort-timeA-a few Weeks onlythe iron, owinggto the-extreme heat of the furnace, will melt and the bricks will fallout, ren- 'dering'thedoors perfectly useless.

The objectofmyinvention is torenler a furnace-door invulnerable against heat, or to protect it in such a mannerthat it will lasta comparatively longperiod, and -tothis eudlcast the doors with tubesI within them sciarranged or disposedas to forma siuuou's water-passage, .through whichwater'isjkept 4constantly ruuning .v yhilethe furnace is in use,.andjthe doors:

therebykept in comparatiyely' a coolstate. -A represents the sheel orgcase of a furnace- 'door of my invention. This shell or case is of v cast-*iron and scast around pipes B, (gas pipes or' tubes will answer the purpose,)` and. said pipes or tubes are fitted 'in the mold, so that the door may belcast; around them. 1The pipesortubes are arranged soas to form a continnous sinuous passage within the door and extend over as great an area of itas possible,

(see Fig. 2;) and each end of the tubular passage prnjects through the door7 so that indiarubber or other fiexible tubes maybe attached to them.

These doors may be litted between guides, so that they may be raised and low'erediuthe usual way, or they may-be hung on hinges,tl/1`e y flexible tubes admitting of the openiugaul closing of th e doors without aifectin g-the iiow of the water through the pipes,which is occasioned By this arrangement it by static pressure. will be see-n that if a door should crack tlie` tubes within thev latter would not be aected i by it5 as would be the case werev thewater-pas-- sage madeV directly-'through or in ythe door or l casting without tubes.

t I claim as new anddes-ire to'seeure by'Let- .ters Patent--- y As au improved article of manuihcture,.at` door' for furnaces provided with internal tubes toform a. water-passage through themi sub.` stautially as and for the. purpose herein `serl forth.

. Y JOSEPH ROGERS. Witnesses: i

E'MUNROE, E. A. SMITH.