US921069A

US921069A - Pipe-closure.

Info

Publication number: US921069A
Application number: US41698908A
Authority: US
Inventors: John D Blake
Original assignee: Individual
Current assignee: Individual
Priority date: 1908-02-21
Filing date: 1908-02-21
Publication date: 1909-05-11
Anticipated expiration: 1926-05-11

Description

J. D. BLAKE.

Y PIPE GLOSURE.

APPLIoATIoN FILED rma. 2 1. 190s.

, 921,069. Patented May 11,1909.

shown at 22`in Fig. 1. This acts as a ack-l .mon angular head, is preferably made of brass. This is an advantage in that the cross-bar 1s preferably made of cast iron, thus tending to prevent corroding or the possibilityof the bolt sticking in the `cross bar to the extent that it is liable to break the parts when it is unscrewed. I nd that these covers are especially valuable to cover openings `of soil pipes in cement basements or. stand pipes through sidewalks. `where the pipes proper are practically all concealed or embedded in -the cement with but a small riser or small piece of pipe coming up through the cement. In the devices ordinarily used prior to this, the bolt or screw that holds the lid in place often becomes badly corroded, making it practically impossible to remove these covers forI the purpose of cleaning the soil pipes, or getting at. the parts without breaking some or all of the parts.

The applicant has had wide experience as a practical plumber, and has found that in attempting to get at devices of this character now in use, the lids were removed with `great diiiiculty, and were easily broken. The ordinarv plumbernot being provided with parts to repair the breaks, the lids were often left off or stuffed with rags or some filling. In at least fifty per cents. of the cases in which repairs have been made by me, I have found the openings closed. with old rags or waste, thus absolutely destroying the sanitary condition of .the plumbing in the house. Also when the old pipe covers have been used as closures on lead drum traps under bath tubs, the removing of the cap often tears the lead drums, and while no serious defect is visible to the eye, a leakage, however, is produced which permits the sewer gas to enter the room. All of these objections are obviated by the use of my simple and compact device comprising at thc most but four movable parts-the cover, the arm, the bolt and the washer. The washer, of course, may be made an integral parl of the boh, thus reducing the number of removable parts to three.

I am aware that other devices have been' ing arm to drop within the pipe either when removing the cover or putting it in place, regardless of the number of times the bolt is turned. Of course, a careless workman, in placing the locking bar within the slot. could drop it Within the pipe by failing to insert it horizontally. This, however, may be absolutely guarded against if the arm he screwed on the end of the bolt before placing the cover in'place. Then this method is used, the arm is given several turns on the bolt, and then the cover is put in place, the locking arm sliding downwardly within the vertical slots until it rests against the bot- `only necessary to giveV it a slight turn in the opposite direction when the ends of the locking arm come within the1 vertical slots, and the cover can be raised. It will thus be seen that no amount of screwing or misuse of the cap can cause any parts of it to become disarranged or dropped within the pipe. This is one oflthe important objects of my invention, as heretofore it has been a very common occurrence that locking arms and portions of the device fall within the pipe, causing much annoyance in recovering them, and in many cases their recovery has been impossible.

The construction of my device is of the .simplest character, and there are no parts subject to great strain, rendering them liable to breakage, nor are there any delicate parts requiring nice adjustment or liable to disarrangement.

The'head 16 may be made in any desired form or shape, in order to accommodate a particular wrench or key, thus avoiding mischievous tampering with the device.

I claim:

l. In a device of the character set forth, a casing provided with oppositely disposed vertical slots and a circumferential locking slot extending laterally from the lower end of each, a cover, a locking bar whose ends are adapted to engage the said vertical and circumferential slots, and a headed screw having a threaded lower end adapted to engage .a threaded recess in the locking bar to secure the cover in position, said screw being independently removable from the cover and the bar when the cover is in a closed position, whereby the screw, cover and locking bar may be removed separately.

Q. In a device of the character set forth. a casing provided with oppositely disposed vvertical slots and circumferential locking vential slots and have a vertical movement at all points therein, and a headed screw l| Signed by me at Rock Island, Ill., this 4th mounted removably `in and det-achably eni day of Feby. 1908.

@aging the locking bar to secure the cover v n position, said screw-being independently JOHN D' BLAKE' removable when the cover is in a closed po- Witnesses:

sition, whereby the cover and'lockng barl A. B.,FREN1ER,

" can be removed separately. l G. W. KONE.