US1907182A - Releasing clamp - Google Patents
Releasing clamp Download PDFInfo
- Publication number
- US1907182A US1907182A US307136A US30713628A US1907182A US 1907182 A US1907182 A US 1907182A US 307136 A US307136 A US 307136A US 30713628 A US30713628 A US 30713628A US 1907182 A US1907182 A US 1907182A
- Authority
- US
- United States
- Prior art keywords
- conductor
- clamp
- clamping
- cam
- projection
- 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
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/05—Suspension arrangements or devices for electric cables or lines
- H02G7/053—Suspension clamps and clips for electric overhead lines not suspended to a supporting wire
Definitions
- An important object of the invention is to provide a clamp for'this purpose which is capable of maintaining its grip until the string of insulators from which it 1s suspend- 4 ed has been pulled through an arc of a certain predetermined extent or moved into a certain angular position with respect to the normal or vertical, release occurring only after the safe angle or inclination has been 0 passed. 7
- Another object of the invention is to provide a clamp embodying cam means for holding it in gripping relation to the conductor, the conductor itself supplying the force for effecting release when the cam means becomes ineffective.
- a further object of the invention is to provide a clamp having suspension means located at the longitudinal axis of the conductor so that the'clamp may accommodate itself to vibrations of the conductor without exerting any bending strains thereon.
- Yet another object of the invention is to provide a clamp of this'character incorporating spring means for maintaining a tight grip upon the conductor andcompensating for any manufacturing variations in the parts.
- Another object is to provide a clamp of this character in which the clamp means is enclosed and consequently protected against the possibility of the accumulation of ice, dirt orother foreign matter which might interfere with the releasing action.
- An additionalobject is to provide a re-' leasing clamp which will be simple and in- Xpensive to manufacture, easy to assemble and install, positive in action, eflicient and durable in service, and a general improvement in the art.
- the invention preferably consists in thedetails of construction and the arrangement and combination of parts to be hereinafter more fully described and claimed and illustrated in the accompanying drawings in which:
- Figure 1 is a side elevation of the clamp 1 in its normal or holding position
- Figure 3 is a cross sectionltaken on the, line 3+3, of Figure 1, showinga plan viewof the clamp itself,
- Figure 4 is an end view with the conductor in section
- Figure 5 is avertical central cross'sectional view with portions in elevation.
- the clamp as comprising lower and upper members 1 and 2 between which the conductor 3 is gripped.
- the member 1 is represented as having a transversely curved groove or seat 4 therein which conformingly receives the conductor, and the member 2 is formed with a similar groove or seat 5.
- Both of these seats are here shown as of compound curved shape, considered longitudinally of the clamp, though it should be distinctly understood that the seats maybe straight throughout if preferred. This is not illustrated as it is an obvious variation. However, there is an advantage in employing a curved seat as will be hereinafter explained.
- both members 1 and 2 be flared outwardly as shown at 6 and 7 respectively so as to avoid contact of the edges with the conductor at any time.
- the suspension means is shown as comprising the links 8, or their equivalent, which may be apertured as at 9 for passage of a securing bolt, pin or the like, 10, for mounting the device at the lower end of a string of suspension insulators.
- the lower clamping member 1 is preferably formed with laterally extending trimnions 11 which are integral therewith and which are located preferably at the longitudinal center line of the conductor beyond the clamp. It is quite apparent that a through bolt could be employed by modifying the structure slightly, though the integral formation of the trunnions is of advantage'in reducing the number of parts.
- the links 8 have their lower ends divergent and apertured at 12 for pivotal engagement of the trunnions 11 there-.
- the seat, channel or groove 4 in the lower member 1 is of considerable depthand the upper member has its groove formed in a considerably reduced portion 13 received within the groove or channel in the lower member as clearly shown in Figure 5.
- the upper member 2 is formed, preferably within the'area covered by the links, with a cam slot 14 at substantially the center of which is a' cam projection 15 having an active surface 16 concentric with the trunnions 11.
- the clampingmeans further includes a bolt 17 passing through holes 18 in the links 8 and through the cam slot 14, thisbolt bearing against the active surface 16 and constituting the means for holding the members 1 and 2 in clamping relation to the conductor.
- a leaf or plate spring 19 located within a recess 20 in the seat or groove 4 in the lower member 1.
- rainwater may enter the clamp I may find it advisable to provide one or more drain holes 21 at the lowermost part of the groove or seat 4 so as to permit it to escape.
- the members 1 and 2 with the bolt 17 out are arranged between the links 8 with the trunnions 11 received within the holes 12.
- the bolt 17 is then inserted through the holes 18 and through the slot 14 at one side or the other of the upstanding cam projection 15.
- the assembled clamp is then moved or swung with respect to thhe links 8 to bring the bolt 17 up over and into engagement with the active cam surface 16.
- the assembly is then suspended from the insulator string by means of a pin or its equivalent 10 and the installation is complete. In service, it will be apparent that in the event of a certain excessive strain at one side of the tower tending to swing the insulator strain to one side or the other, the clamp will retain its holding action.
- the bolt 17 may play along the cam surface 16in accordance with swinging movement of the insulator string on account of wind or expansion and contraction of different sections or portions of the con-, ductor.
- the bolt 17 may play along the cam surface 16in accordance with swinging movement of the insulator string on account of wind or expansion and contraction of different sections or portions of the con-, ductor.
- a clamping device for suspending a conductor comprising a pair of clamping members, suspension means therefor, cam means for maintaining the clamping members in clamped relation upon a conductor, said cam means including a slot within one clamping member, and a projection defined by the slot and having a cam surface.
- a clamping device for suspending a conductor comprising a'pair of clamping members, suspension means therefor, cam means for maintaining the clamping members in clamped relation upon a conductor, and spring means enclosed within one member engaging against the conductor for taking up play and compensating for manufacturing variations.
- suspension means pivotally connected with one member, the other member having a cam slot and a projection therein, and means carried by the suspension means and extending within said cam slot and engaging said projection for holding said clamping members:
- suspension means pivotally connected with one member, the other member having a cam slot therein, means carried by the suspension means and extending within said cam slot for holding said clamping members in clamped relation to a conductor, one member having a recess therein at its conductor engaging portion, and a spring within said recess.
- a clamping device for suspending a conductor comprising a pair of clamping members, suspension means therefor, cam means for maintaining the clamping members in clamped relation upon a conductor, and spring means located within one member engaging against the conductor for taking up play and compensating for manufacturing variations, the lower clamping member having holes therein permitting outlet of any water which may accumulate therein.
- a clamp of the character described comprising upper and lower members disposable against opposite sides of a conductor, said members being grooved longitudinally to define seats receiving the conductor, trunnions projecting lateraliy from the lowor member, suspension links straddling the clamp and pivotally engaged upon said trunnions, the upper member being formed at itscenter with a slot and with an upstand ing cam projection,v and a bolt passing through the links and the slot and engaging said cam projection for holding the clamping members in clamped relation upon a. conductor.
- a clamping device for suspending a conductor comprising a pair of clamping members disposable upon the conductor, pivoted suspension means therefor, one member having a curved slot therein and a projection defined by the slot, the, projection having a curved surface concentric with the pivot of the suspension means, a member carried by the suspension means and extending into said slot in engagement with the curved surface of the normally maintaining said clamping members in clamping relation to the conductor, and means within the other member for applying pressure against the conductor.
- a clamping device for suspending a conductor comprising a lower clamping member, an upper clamping member, suspension means pivotally connected with the lower clamping member, the upper clamping member having an opening and an upstanding projection extending into the opening and constituting a cam, the upper surface of the projection and a portion of the upper wall of the opening being concentric with the pivotal mounting of the suspension means, and a member carried by the suspension means and traversing said opening and normally in engagement with the flipper surface of the projection for maintaining the clamping members in clamping relation upon the conductor.
- a clamp for suspending a. conductor comprising a lower clamping member formed at its sides with trunnions, an upper clamping member, suspension links pivoted upon the trunnions, the upper clamping member being formed with a cam slot and a cam projection, and means on the links projecting into said slot in engagement with said projection for normally maintaining said clamping members in clamping relation to the conductor.
- a clamp for suspending a conductor comprising a lower clamping member formed with a longitudinally extending groove defining a seat for the conductor, an upper clamping member having a longitudinally extending reduced portion received within said groove, trunnions projecting latterally from the lower clamping member, and sus pension links pivoted upon said trunnions and carrying means normally holding the clamping members in clamping relation to the conductor.
- a clamping device-for suspending a conductor comprising upper and lower clamping members dlsposable against a conductor, the upper clamping member being pro ection for iso formed With a cam slot and a projection having a cam surface, suspension means, a transverse element carried by the suspension means and extending into said slot in engagement with said projection for normally maintaining said members in clamping relation to the conductor, and a spring Within the lower clamping member in engagement with theeonductor for holding said transverse element in close engagement with the projection.
Landscapes
- Suspension Of Electric Lines Or Cables (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE363910D BE363910A (fr) | 1928-09-20 | ||
| US307136A US1907182A (en) | 1928-09-20 | 1928-09-20 | Releasing clamp |
| FR682011D FR682011A (fr) | 1928-09-20 | 1929-09-19 | Perfectionnements aux pinces pour conducteurs électriques |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US307136A US1907182A (en) | 1928-09-20 | 1928-09-20 | Releasing clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US1907182A true US1907182A (en) | 1933-05-02 |
Family
ID=23188393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US307136A Expired - Lifetime US1907182A (en) | 1928-09-20 | 1928-09-20 | Releasing clamp |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US1907182A (fr) |
| BE (1) | BE363910A (fr) |
| FR (1) | FR682011A (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2211780B1 (fr) * | 1972-12-22 | 1976-08-27 | Sicame Sa |
-
0
- BE BE363910D patent/BE363910A/xx unknown
-
1928
- 1928-09-20 US US307136A patent/US1907182A/en not_active Expired - Lifetime
-
1929
- 1929-09-19 FR FR682011D patent/FR682011A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE363910A (fr) | |
| FR682011A (fr) | 1930-05-22 |
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