US1173860A - Level. - Google Patents

Level. Download PDF

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Publication number
US1173860A
US1173860A US87853814A US1914878538A US1173860A US 1173860 A US1173860 A US 1173860A US 87853814 A US87853814 A US 87853814A US 1914878538 A US1914878538 A US 1914878538A US 1173860 A US1173860 A US 1173860A
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United States
Prior art keywords
cover plate
level
plate
guard
bulb
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
US87853814A
Inventor
Acie M Prater
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Individual
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Individual
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Priority to US87853814A priority Critical patent/US1173860A/en
Application granted granted Critical
Publication of US1173860A publication Critical patent/US1173860A/en
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Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
    • G01C15/10—Plumb lines

Definitions

  • This invention relates to levels and more particularly to guards or protectors for the bulbs of spirit levels.
  • the bulb is usually exposed through a slot in a cover plate secured to the edge of the level and the present invention is designed to protect the bulb against breaking when the level is not in use. It frequently occurs that when the level is put in the box, tool chest or other similar receptacle with other tools that the bulb becomes broken from contact with said tools, thereby necessitating replacement which entails considerable trouble.
  • FIG. 1 is a side elevation showing the guard in operative slot closing position.
  • Fig. 2 is a transverse sectional view.
  • Fig. 3 is a detail longitudinal sectional view.
  • 1 represents the level body which is recessed at 2 to receive a spirit bulb 3, as is usual.
  • the cover plate 5 which in this instance is made somewhat longer than in ordinary instances.
  • This cover plate is secured to the level body in any suitable manner and has connected thereto a leaf spring 6, one terminal of which is passed througha slot 7 in the cover plate and secured to the underside thereof.
  • a guard or protector consisting of a plate of any suitable material, generally indicated at 9, and having its marginal edges turned over the cover plate into retaining and guiding flanges 10.
  • the side edges of the plate are preferably milled or suitably roughened, as indicated at 11, so as to provide a gripping surface and the forward movement of the plate is preferably limited by a knob or boss 12 pressed up from the cover plate, as shown.
  • the guard When the level is not in use the guard is moved forwardly over the slot in the cover plate, thereby concealing the bulb and preventing breakage of the same.
  • a slotted cover plate for the spirit bulb a guard plate slidably mounted over the cover plate and having the longitudinal edges thereof bent to form guideways, said guideways receiving the edges of said cover plate, means for holding the guard plate in inactive position, and means for limiting the movement of the guard plate when moved to active position.
  • a slotted cover plate for the spirit bulb a guard plate slidably mounted over the cover plate, said guard plate having the longitudinal edges thereof bent to form guideways for receiving the longitudinal edges of said cover plate, a
  • leaf spring mounted in one end of said cover plate and engaging said guard plate when in inactive position, and a boss formed on the opposite end of said cover plate and serving to limit the forward movement of the guard plate when moved to active posi-' tion.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Description

A. M. PRATER.
LEVEL.
APPLICATION FILED DEC.22, 1914.
1 ,173,8 60 Patented Feb. 29,1916.
Suva/whom AJMPra hr:
UNI S S LEVEL.
Specification of Letters Patent.
Patented Feb. 29, 1916.
Application filed December 22, 1914. Serial No. 878,538.
To all whom it may concern Be it known that I, ACIE M. PRATER, a white citizen of the United States, residing at Hugo, in the county of Choctaw and State of Oklahoma, have invented new and useful Improvements in Levels, of which the following is a specification.
This invention relates to levels and more particularly to guards or protectors for the bulbs of spirit levels. In this type of level the bulb is usually exposed through a slot in a cover plate secured to the edge of the level and the present invention is designed to protect the bulb against breaking when the level is not in use. It frequently occurs that when the level is put in the box, tool chest or other similar receptacle with other tools that the bulb becomes broken from contact with said tools, thereby necessitating replacement which entails considerable trouble.
It is, therefore, the object of this invention to obviate these difficulties and it is a further object to provide simple and efficient means for closing the slot and the cover plate and also for holding the closing means in inoperative position when the level is in use.
Further objects of the invention will appear as the following description is read in connection with the accompanying drawing, which forms a part of this application, and in which Figure 1 is a side elevation showing the guard in operative slot closing position. Fig. 2 is a transverse sectional view. Fig. 3 is a detail longitudinal sectional view.
Referring more particularly to the drawing, 1 represents the level body which is recessed at 2 to receive a spirit bulb 3, as is usual. Mounted over the recess and being provided with a longitudinal slot 4: is the cover plate 5 which in this instance is made somewhat longer than in ordinary instances. This cover plate is secured to the level body in any suitable manner and has connected thereto a leaf spring 6, one terminal of which is passed througha slot 7 in the cover plate and secured to the underside thereof.
The opposite terminal of the spring is passed through a slot 8 and is free, as shown in Fig. 3
Slidably mounted upon the cover plate is a guard or protector consisting of a plate of any suitable material, generally indicated at 9, and having its marginal edges turned over the cover plate into retaining and guiding flanges 10. The side edges of the plate are preferably milled or suitably roughened, as indicated at 11, so as to provide a gripping surface and the forward movement of the plate is preferably limited by a knob or boss 12 pressed up from the cover plate, as shown.
When the level is not in use the guard is moved forwardly over the slot in the cover plate, thereby concealing the bulb and preventing breakage of the same.
What is claimed is 1. In a spirit level, a slotted cover plate for the spirit bulb, a guard plate slidably mounted over the cover plate and having the longitudinal edges thereof bent to form guideways, said guideways receiving the edges of said cover plate, means for holding the guard plate in inactive position, and means for limiting the movement of the guard plate when moved to active position.
2. In a spirit level, a slotted cover plate for the spirit bulb, a guard plate slidably mounted over the cover plate, said guard plate having the longitudinal edges thereof bent to form guideways for receiving the longitudinal edges of said cover plate, a
leaf spring mounted in one end of said cover plate and engaging said guard plate when in inactive position, and a boss formed on the opposite end of said cover plate and serving to limit the forward movement of the guard plate when moved to active posi-' tion.
In testimony whereof I affix my signature in presence of two witnesses.
ACIE M. PRATER. Witnesses:
V. M. TYLER,
RUTH STANFORD.
Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.
US87853814A 1914-12-22 1914-12-22 Level. Expired - Lifetime US1173860A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US87853814A US1173860A (en) 1914-12-22 1914-12-22 Level.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US87853814A US1173860A (en) 1914-12-22 1914-12-22 Level.

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US1173860A true US1173860A (en) 1916-02-29

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Family Applications (1)

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US87853814A Expired - Lifetime US1173860A (en) 1914-12-22 1914-12-22 Level.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2627115A (en) * 1951-03-02 1953-02-03 Lester H Pippin Level

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2627115A (en) * 1951-03-02 1953-02-03 Lester H Pippin Level

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