US788441A - Manhole-cover. - Google Patents

Manhole-cover. Download PDF

Info

Publication number
US788441A
US788441A US24167905A US1905241679A US788441A US 788441 A US788441 A US 788441A US 24167905 A US24167905 A US 24167905A US 1905241679 A US1905241679 A US 1905241679A US 788441 A US788441 A US 788441A
Authority
US
United States
Prior art keywords
cover
plate
manhole
bolts
depression
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US24167905A
Inventor
John H Vanderslice
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LUKENS IRON AND STEEL Co
Original Assignee
LUKENS IRON AND STEEL Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LUKENS IRON AND STEEL Co filed Critical LUKENS IRON AND STEEL Co
Priority to US24167905A priority Critical patent/US788441A/en
Application granted granted Critical
Publication of US788441A publication Critical patent/US788441A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J13/00—Covers or similar closure members for pressure vessels in general
    • F16J13/02—Detachable closure members; Means for tightening closures
    • F16J13/04—Detachable closure members; Means for tightening closures attached with a bridge member

Definitions

  • the object of my invention is to provide a manhole-cover with means by which the cover is secured to the shell of the boiler or other container without passing the bolt through the cover.
  • Figure 1 is a plan View of my improved manhole-cover.
  • Fig. 2 is a longitudinal sectional view on the line 2 2
  • Fig. 1. is a transverse section on the line 3 3
  • Fig. 1. Fig. 4 is a view showing the blank after the first step in the process of manufacture and before the blank is turned down over the plate.
  • Fig. 5 is a view of a modification.
  • Fig. 6 is a View showing my improved manhole-cover attached to a boiler-shell
  • Fig. 7 shows the plate with a singlerecess for a bolt.
  • A is a struck-up sheet-metal cover having a depression a and projecting portions a. These portions (0' extend on each side of the plate and are of such a height that when the blank is pressed in the first step in the process of manufacture, as shown in Fig. 4, they can be turned over the edges of a plate B, as shown in Fig. 3, thus clamping the plate rigidly and permanently to the cover A.
  • This plate I prefer to notch at b b to receive the bolts 23 '11, by which the cover-plate is secured to the boiler, the heads of the bolts, as illustrated in Fig. 6, resting back of the plate and in the depressed portion a of the cover.
  • Fig. 7 1 have illustrated a plate B with a single notch I), placed centrally in respect to the cover-plate, and in Fig. 5 I have illustrated a construction in which the plate B is bent so as to allow .room for the head of the bolt, the depressed portion of the cover-plate being not as deep as the construction shown in Fig. 3.
  • a manhole-cover having a central longitudinal depression, and flanges at each side of the depression, with a plate notched at each end to receive securingbolts, said plate being mounted between the side flanges of the cover and sufficiently above the bottom of the depression to allow the heads of the bolts to pass under the plate, the plate being secured to the cover by the overlapping side flanges, substantially as described.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

Description

No. 788.441. PATENTED APR. 25.1905.
' J. H. VANDERSLIGE.
MANHOLE COVER.
APPLICATION IILED JAN. 18. 1905.
NITED Y STATES Patented April 25, 1905.
PATENT OFFICE.
JOHN H. VANDERSLICE, OF COATESVILLE, PENNSYLVANIA, ASSIGNOR TO LUKENS IRON AND STEEL COMPANY, OF COATESVILLE, PENN- SYLVANIA, A CORPORATION OF PENNSYLVANIA.
MANHOLE-COVER.
SPECIFICATION forming part of Letters Patent No. 788,441, dated April 25, 1905.
i Application filed January 18,1905. Serial No. 241,679.
To all whom it may concern:
Be it known that I, JOHN H. VANDERsLIoE, a citizen of the United States, residing at Coatesville, Pennsylvania, have invented certain Improvements in Manhole Covers, of which the following is a specification.
The object of my invention is to provide a manhole-cover with means by which the cover is secured to the shell of the boiler or other container without passing the bolt through the cover. This object I attain in the following manner, reference being had to the accompanying drawings, in which- Figure 1 is a plan View of my improved manhole-cover. Fig. 2 is a longitudinal sectional view on the line 2 2, Fig. 1. Fig. 3 is a transverse section on the line 3 3, Fig. 1. Fig. 4 is a view showing the blank after the first step in the process of manufacture and before the blank is turned down over the plate. Fig. 5 is a view of a modification. Fig. 6 is a View showing my improved manhole-cover attached to a boiler-shell, and Fig. 7 shows the plate with a singlerecess for a bolt.
A is a struck-up sheet-metal cover having a depression a and projecting portions a. These portions (0' extend on each side of the plate and are of such a height that when the blank is pressed in the first step in the process of manufacture, as shown in Fig. 4, they can be turned over the edges of a plate B, as shown in Fig. 3, thus clamping the plate rigidly and permanently to the cover A. This plate I prefer to notch at b b to receive the bolts 23 '11, by which the cover-plate is secured to the boiler, the heads of the bolts, as illustrated in Fig. 6, resting back of the plate and in the depressed portion a of the cover.
In Fig. 7 1 have illustrated a plate B with a single notch I), placed centrally in respect to the cover-plate, and in Fig. 5 I have illustrated a construction in which the plate B is bent so as to allow .room for the head of the bolt, the depressed portion of the cover-plate being not as deep as the construction shown in Fig. 3.
By the construction above described I am enabled to make a very substantial cover-plate for the manholes of steam-boilers or other containers without perforating the cover and without relying on the cover itself to grasp the heads of the bolts. ThusI am enabled to use common stock-bolts and do not have to provide bolts with special heads for the improved cover, so that in the event of a breakdown any headed bolts of the proper diameter and length can be used to make the repair, and by providing a plate such as shown in the drawings I am enabled to get a firm bearing of the head of the bolt upon the plate and an extended bearing of the plate upon the flanged portion of the cover.
I claim as my invention 1. The combination of a manhole-cover with a plate secured thereto by an overlapping portion of the cover, substantially as described.
2. The combination of a manhole-cover,hav ing a depression and side flanges, with a plate recessed for the reception of a retaining-bolt, said plate being permanently secured to the cover by the overlapping side flanges thereof, substantially as described.
3. The combination ofamanhole-cover,hav ing a depression and side flanges, with a plate situated between the side flanges and secured to the cover by the overlapping portions of said flanges, said plate having notches in each end for the reception of retaining-bolts, substantially as described.
4. The combination of a manhole-cover, having a central longitudinal depression, and flanges at each side of the depression, with a plate notched at each end to receive securingbolts, said plate being mounted between the side flanges of the cover and sufficiently above the bottom of the depression to allow the heads of the bolts to pass under the plate, the plate being secured to the cover by the overlapping side flanges, substantially as described.
In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.
JOHN H. VAN DERSLICE.
Witnesses:
WILL. A. BARR, J 0s. H. KLEIN.
US24167905A 1905-01-18 1905-01-18 Manhole-cover. Expired - Lifetime US788441A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US24167905A US788441A (en) 1905-01-18 1905-01-18 Manhole-cover.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24167905A US788441A (en) 1905-01-18 1905-01-18 Manhole-cover.

Publications (1)

Publication Number Publication Date
US788441A true US788441A (en) 1905-04-25

Family

ID=2856931

Family Applications (1)

Application Number Title Priority Date Filing Date
US24167905A Expired - Lifetime US788441A (en) 1905-01-18 1905-01-18 Manhole-cover.

Country Status (1)

Country Link
US (1) US788441A (en)

Similar Documents

Publication Publication Date Title
US788441A (en) Manhole-cover.
US578350A (en) Joseph mccain
US521733A (en) Manhole-cover
US673873A (en) Holder for transfer-points.
US1465430A (en) Barrel fastening
US391203A (en) Divided car-axle
US610436A (en) Roller-bearing
US830782A (en) Well-cap.
US905192A (en) Metallic barrel.
US1243278A (en) Milk-can handle.
US1364322A (en) Center-plate
US444015A (en) Street stop-cock box
US1107897A (en) Nut-lock.
US730591A (en) Metal wheel.
US973724A (en) Tool.
US1082726A (en) Milk-can-cover lock and seal.
US764162A (en) Dust-guard for axle-boxes.
US872899A (en) Clamping-ring.
US1034102A (en) Barrel-head.
US162454A (en) Improvement in coal-hods
US827751A (en) Armored sheet-metal can.
US434075A (en) Valentin wilhelmi
US1286628A (en) Barrel.
US408029A (en) Kenzie hughes
US623823A (en) Felly-shield