US1624258A - Nonoxidizing annealing furnace - Google Patents

Description

Aprll l2, 1927. V. E. LANE NoNoxIDIzING ANNEALING FURNACE Filed Feb. l5. 1926 2 Sheets-Sheet'z f raising and lowering of-the wor Patented Apr. l2, 1927.

UNITED STATES VICTOR E. LAN, OF DETROIT, MICHIGAN.

NONOXIDIZING ANNEALING FURNACE.

Application filed February 15, 1.926. Serial No. 88,325.

The invent-ion relates to furnaces 0f that type in which the work in introduced and withdrawn from the heating chamber through a water seal. l

It is the object of the present invention to obtain a construction which facilitates rapid transfer of the work through the water seal and also one which is comparatively inexpensive to construct and easily manipulated. With these objects in view the invention consists in the construction as hereinafter set forth.

In the drawings;

Figure 1 is a vertical central longitudinal section through my improved construction.

Figure 9. is a cross section on line 2-2 of Figure l.

Figure 3 is a horizontal section on lin 3-3 of Figure 1.

In the installation of furnaces of the type above referred to, one large item in the cost is the construction of the pit for forming the water seal. This is necessarily of sufficient depth to give clearance beneath the furnace chamber equal to its height together with additional depth for receiving the elevator mechanism. In addition to the elevator mechanism provision must also be made for the. lateral'transt'er of the work from a. position in registration with the external opening from the pit to a position in registration with the furnace chamber, this being accomplished while the elevator is at the bottoni of the pit. With my improvement the elevator is of such construction as to reduce the necessary depth of the pit to a minimum and also is provided with means for easily and quickly transferring the work laterally thereof. Furthermore the construction is provided with external openings to the pit at opposite sides of the furnace chamber which permits of introducing and removing work alternately'from said opposite sides and simultaneousl with the in registration with the furnace chamber. This not only expedites the introduction and removal of workfrom the furnace but also balances the load on the elevator as will be hereinafter set forth.

In detail A is the it preferably of rectangular'form and w .ich is provided with Y an upward. extension B above the floor line C. The height of this upward extension is such as to be convenient 4for transferring the work from a truck to the elevator platform and it also serves to decrease the depth below the floor line thereby greatly saving in cost of construction.

D is the furnace of any suitable construction and havingarranged therein the retort or muffler. E' in which the work is to be heated. This furnace extends centrally across the pit leaving openings F, F on opposite sides thereof and being supported by any suitable means suchA as the reinforcement bars G imbedded therein near the base thereof. H, H are lateral extensions of the pit in the central transverse plane thereof. I, I are hydraulic jacks located on .opposite sides of the furnace in registration with said lateral extensions of the pit and J, J are the piston rods of said jacks extending downward into the pit.

The elevator is formed by a beam K extending horizontally between the pistons J, J uponl which beam is supported the transversely extending spaced beams L, L. The latter form a track on which is mounted the carria e M having flanged wheels N, said track eing of a length to extendv from one end of the pit to slightly beyond the centre thereof. riage are elevator platforms O, O so positioned that when one is in registration with the retort or mutiler E the other will be in registration with one of the external openings to the pit F, F. P, P are hydraulic cylinders located between the beams L, L and suspended from the carriage M. Q, Q are piston rods extending outward from the cylinders P, P and anchored to the opposite end of the beams L, L. The arrangement is such that the relative movement of the pistons and cylinders P, P will cause the travel of the truck from a position where one of its platforms is in registration with an external opening to the pit and the other with thse muflier, to a position where the first is placed in registration with the muiller and the latter' in registration with the opposite external opening of the pit. Thismovement occurs only when the beams L, L are at the bottom of the pit and will thus avoid interference between the work and the furnace.

- To 'take care of the lateral thrust due to the unbalanced condition of the loadgwhen the elevator is at one end or the other of thev tracks L, L', anti-friction wheels R are ar'- Upon' opposite ends ofthis car' ranged at opposite ends of the beam K to engage vertically extending guides S.

lVhat l claim as my invention is:

1. The combination with a mutlie furnace having an opening at the bottom, of av/ater filled pit beneath said furnace extended to provide openings thereto on opposite sides of the furnace, an elevator Within said pit having a beam extending to the opposite sides thereof, a carriage mounted to travel on said beam and spaced Work supports on said carriage for registering with said inutile respectively when said carriage is at opposite ends of said beam the wol-l; supports not in registration with said muliie being regis- -tered with one or the other of said external openings to the pit.

2. The combination with a muftle furnace having an opening in the bottom thereof, of a water pit beneath said furnace extended to provide entrance openings on opposite sides thereof, an lelevator Within said pit, spaced Work supports on said elevator for registering with said muiie and one 'of the external openings to the pit and means for moving said Supports laterally upon said elevator to reverse the registration thereof.

3. The combination with a mufHe furnace having an opening in the bottom thereof, of a water pit beneath said furnace extended to provide entrance openings on opposite sides thereof, an elevator located in the central plane of said furnace and having a beam extended to the opposite sides of the pit, a carriage for travelling on said beam, work supports on said carriage for registering respectively With said Inutile and one of the external openings to the pit and means for moving said carriage on said beam in the `lowered position of the elevator to reverse the registration of said work supports.

4. The combination with a mutlle furnace l having an opening at the bottom thereof, of

Maaate a Water pit beneath said furnace extended to provide entrance openlngs on opposite sides thereof, and also extended to provide openings in a transverse plane on opposite Y sides of the furnace, an elevator having centrally engaging beams extending respectively in said transverse plane, hydraulic jacks on opposite sides of said furnace in one of said transverse planes operatively connected with one of said beams, a carriage mounted to travel on the transverse beam and Work supports on said carriage for siniultaneously registering with said muiile and one of the external openings to the pit,

`the registration of said supports being reopening to said mule.

6. The combination with a mulile furnace having an opening at the bottom, of a Water filled pit beneath said furnace extending upward above the floor level to a convenient height for receiving Work from a truck, the

rlevel of the Water in said pit being such aS to seal said muflie and said pit extending to provide an entrance opening at one side of said furnace, an elevator in said pit and means on said elevator for transferring Work laterally between positions in registration respectlvely with said outside opening and said Inutile.

In testimony whereof I affix my signature VICTOR E. LANE.

Images