US464763A - Henry d - Google Patents
Henry d Download PDFInfo
- Publication number
- US464763A US464763A US464763DA US464763A US 464763 A US464763 A US 464763A US 464763D A US464763D A US 464763DA US 464763 A US464763 A US 464763A
- Authority
- US
- United States
- Prior art keywords
- spring
- drum
- frame
- suspended
- thing
- 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
- 238000006243 chemical reaction Methods 0.000 description 6
- 230000000875 corresponding Effects 0.000 description 6
- 239000000725 suspension Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 241000217266 Ansonia Species 0.000 description 2
- 206010033307 Overweight Diseases 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006011 modification reaction Methods 0.000 description 2
- 235000020825 overweight Nutrition 0.000 description 2
- 230000036633 rest Effects 0.000 description 2
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
- H02G11/00—Arrangements of electric cables or lines between relatively-movable parts
- H02G11/02—Arrangements of electric cables or lines between relatively-movable parts using take-up reel or drum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
- B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
- B65H75/34—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables
- B65H75/38—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks specially adapted or mounted for storing and repeatedly paying-out and re-storing lengths of material provided for particular purposes, e.g. anchored hoses, power cables involving the use of a core or former internal to, and supporting, a stored package of material
- B65H75/44—Constructional details
- B65H75/4418—Arrangements for stopping winding or unwinding; Arrangements for releasing the stop means
- B65H75/4428—Arrangements for stopping winding or unwinding; Arrangements for releasing the stop means acting on the reel or on a reel blocking mechanism
- B65H75/4434—Arrangements for stopping winding or unwinding; Arrangements for releasing the stop means acting on the reel or on a reel blocking mechanism actuated by pulling on or imparting an inclination to the material
Definitions
- Figure 1 a side view of the device complete; Fig. 2, an under side view showing the frictional spring applied; Fig. 3, a section through the lower part of the frame and a portion of the head of the drum on line at .r of Fig. 2; Fig. 4, a section cutting in line as x of Fig. 3; Fig. 5, the spring detached; Fig. 6, the same as Fig. 2, representing the frictional spring as arranged for reverse action from that of Fig. 2; Fig. 7, a modification in the construction of the spring-seat; and Fig. 8, a partial side view from the reverse of Fig. 1, showing the means for adjusting the spring.
- This invention relates to an improvement in devices employed for suspending lamps from the ceiling, or for other purposes where an adjustable elevation is desired, and which devices consist of aframe by which the thing may be suspended, a shaft with a spring-drum arranged thereon, and chains wound upon the drum under the reaction of the spring, extending from the drum downward, and so that a pull upon the chains will produce a rotation of the drum and corresponding winding of the spring, and then the reaction of the spring will produce a corresponding return of the drum and rewind the chains upon the drum.
- Suspension devices of this character particularly when employed for lamps, where there is great liability to variation in the weight of the thing suspended, require some mechanism to be applied between the spring and the thing suspended to overcome the variations in the weight, so that under such variations the spring will not give way to permit an overweight to fall or operate to raise the thing suspended when the weight is below a given point.
- the objectof this invention is to produce a simple automatic frictional device upon the drum, which will produce this counterbalancing effect; and it consists in the construction as hereinafter described, and particularly recited in the claims.
- the device is shown with the drum arranged upon a vertical shaft.
- the frame A is of usual form,consisting of an upper and lower bar connected by vertical sides, and is provided with a hanger or loop B, by which it may be suspended.
- a vertical shaft C on which is arranged the spring-dru m D.
- the spring-dru m D On the drum two chains E E are wound, running, respectively, over pulleys. F from the drum, thence downward, connected in any suitable manner for the purpose of attaching the thing to be suspended, and so that the chains will draw alike upon the drum in running down and be alike rewound upon the drum as the thing suspended is elevated, all
- a concentric groove H is formed, so as to produce a shoulder I substantially parallel with the axis of the drum.
- a divided ringshaped spring J is arranged in this groove.
- the spring is reaction of the spring will cause it to expand against the shoulder I or outer surface of the groove H. fast to the frame. As here represented, this is done by turning one end K of the spring outward, so as to bear against the one side of the frame A, as seen in Fig. 3, and it is there clamped by means of a screw L and a lug M, so that the spring is firmly held against rotation.
- the point of attachment between the spring and the frame is at that end of the spring toward which the drum revolves in doscending.
- the other end of the spring lies One end of this spring J is made freely in the groove, except as to the means of adjustment hereinafter described.
- the power of the friction-springJ thus arranged is made sufficient for all possible variation of the thing suspended, and so that while the spring-drum will aid in raising the thing suspended and resist the descent of the thing so suspended the friction-spring J will automatically operate to resist such winding should the thing suspended be lighter than the normal power of the spring, and in like manner prevent the descent of the thing suspended should it be heavier than the normal power of the spring-drum.
- the fric tional device should oppose the rise of the thing suspended instead of the descent, as I have described.
- the spring is secured by its other end, as seen in Fig. 6.
- the shoulder or concentric bearing for the spring maybe produced upon the drum without the necessity of cutting a groove.
- the drum may be constructed with a rib to produce the shoulderI, against which the spring will bear, itonly being essential that the bearing surface upon which the spring rests shall be substantially parallel with the axis of the drum and spring, so that the spring maybe firmly seated thereon; but I prefer the groove, it permits the arrangement of the spring substantially flush with the surface of the head of the drum.
- the free end is turned outward from the groove, so as to form an arm a, through which an adj HStlHg-SOIGW Z) passes into the frame, and so that that end of the spring may be drawn toward the frame or permitted to recede from the frame to Vary the friction between the spring J and the drum--that is to say, if the free end he forced so far toward the frame as to practically take it out of contact with the groove or shoulder of the drum, then there would be no friction; but if the spring be released so as to bring the spring into contact with the drum, then the friction between the drum and the spring will be according to the circumferential play which is permitted to the spring, and that circumferential play will be limited by the adjusting screw b. Hence the frictional power of the spring may be varied according to circum stances.
- a suspension device for lamps and like purposes, the combination of a frame, a spring-actuated drum arranged upon an axis in the frame, chains running from said drum to the thing suspended, the drumconstructed with a concentric internal shoulder or bearing-surface I in a plane substantially parallel with the axis of the drum, with a divided ring-shaped spring J, made from wire, arranged upon the drum against and so as to bear outwardly upon the said shoulder, one end of the said wire spring made fast to the frame, the other end of the wire spring turned outwardly to form an arm a, and a screwb through said arm into the frame, and whereby the spring is made adjustable with relation to the said shoulder,substantially as and for the purpose described.
Landscapes
- Mirrors, Picture Frames, Photograph Stands, And Related Fastening Devices (AREA)
Description
(No Model.)
H. D. RICHARDSON. SUSPENSIONDEVIOE FOR LAMPS, &G.
No. 464,763. Patented Dec 8, 1891 llNrrno STATES PATENT OFFICE.
HENRY D. RICHARDSON, OF ANSONIA, CONNECTICUT, ASSIGNOR TO IVALLACE dz SONS, OF SAME PLACE.
SUSPENSION DEVICE FOR LAMPS, 800.
SPECIFICATION forming partof Letters Patent No. 464,763, dated December 8, 1891.
Application filed November 21, 1890. Serial No. 372,150. (No model.)
To aZZ whom it may concern:
Beit known that I, HENRY D. RICHARDSON, of Ansonia, in the county of New Haven and State of Connecticut, have invented a new Improvement in Suspension Devices for Lamps, &c.; and I do hereby declare the following, when taken in connection with accompanying drawings and the letters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, and represent, in
Figure 1, a side view of the device complete; Fig. 2, an under side view showing the frictional spring applied; Fig. 3, a section through the lower part of the frame and a portion of the head of the drum on line at .r of Fig. 2; Fig. 4, a section cutting in line as x of Fig. 3; Fig. 5, the spring detached; Fig. 6, the same as Fig. 2, representing the frictional spring as arranged for reverse action from that of Fig. 2; Fig. 7, a modification in the construction of the spring-seat; and Fig. 8, a partial side view from the reverse of Fig. 1, showing the means for adjusting the spring.
This invention relates to an improvement in devices employed for suspending lamps from the ceiling, or for other purposes where an adjustable elevation is desired, and which devices consist of aframe by which the thing may be suspended, a shaft with a spring-drum arranged thereon, and chains wound upon the drum under the reaction of the spring, extending from the drum downward, and so that a pull upon the chains will produce a rotation of the drum and corresponding winding of the spring, and then the reaction of the spring will produce a corresponding return of the drum and rewind the chains upon the drum. Suspension devices of this character, particularly when employed for lamps, where there is great liability to variation in the weight of the thing suspended, require some mechanism to be applied between the spring and the thing suspended to overcome the variations in the weight, so that under such variations the spring will not give way to permit an overweight to fall or operate to raise the thing suspended when the weight is below a given point.
The objectof this invention is to produce a simple automatic frictional device upon the drum, which will produce this counterbalancing effect; and it consists in the construction as hereinafter described, and particularly recited in the claims.
In the illustrations the device is shown with the drum arranged upon a vertical shaft.
The frame A is of usual form,consisting of an upper and lower bar connected by vertical sides, and is provided with a hanger or loop B, by which it may be suspended.
Supported in the frame is a vertical shaft C, on which is arranged the spring-dru m D. On the drum two chains E E are wound, running, respectively, over pulleys. F from the drum, thence downward, connected in any suitable manner for the purpose of attaching the thing to be suspended, and so that the chains will draw alike upon the drum in running down and be alike rewound upon the drum as the thing suspended is elevated, all
substantially in the usual manner for this class of lifting devices. The details of these devices are too well known to require particular description.
Upon one of the heads of the drum, herein represented as the under head G, a concentric groove H is formed, so as to produce a shoulder I substantially parallel with the axis of the drum. In this groove a divided ringshaped spring J is arranged. The spring is reaction of the spring will cause it to expand against the shoulder I or outer surface of the groove H. fast to the frame. As here represented, this is done by turning one end K of the spring outward, so as to bear against the one side of the frame A, as seen in Fig. 3, and it is there clamped by means of a screw L and a lug M, so that the spring is firmly held against rotation. The point of attachment between the spring and the frame is at that end of the spring toward which the drum revolves in doscending. The other end of the spring lies One end of this spring J is made freely in the groove, except as to the means of adjustment hereinafter described.
The direction of rotation of. the drum in drawing the chains therefrom is indicated by the arrow in Figs. 2 and 5. The spring, as before stated, lies in close frictional contact with the shoulder I or outer side of the groove H. Consequently, as the drum is revolved in the direction indicated by the arrow the friction between the drum and spring will tend to force the free end of the spring around and toward the fixed end, and such tendency causes an expansion of the spring against the shoulder of the drum and produces a corresponding frictional resistance to the rotation of the drum in that direction; but when the drum' is revolved in the opposite direction, as by the elevation of the thing suspended and the rewinding of the chains upon the drum, the frictional action of the drum upon the spring is to force it circumferentially from the point of attachment and toward the free end of the spring; but as there is no resistance to the turning of the spring in this direction the spring naturally contracts under such rotation and frictional contact with the drum, and such contractingaccordinglyrelieves the drum from frictional pressure of the said spring J. The power of the friction-springJ thus arranged is made sufficient for all possible variation of the thing suspended, and so that while the spring-drum will aid in raising the thing suspended and resist the descent of the thing so suspended the friction-spring J will automatically operate to resist such winding should the thing suspended be lighter than the normal power of the spring, and in like manner prevent the descent of the thing suspended should it be heavier than the normal power of the spring-drum.
In some cases it is desirable that the fric tional device should oppose the rise of the thing suspended instead of the descent, as I have described. In such case the spring is secured by its other end, as seen in Fig. 6.
It will be understood that the shoulder or concentric bearing for the spring maybe produced upon the drum without the necessity of cutting a groove. Forillustration, as seen in Fig. 7, the drum may be constructed with a rib to produce the shoulderI, against which the spring will bear, itonly being essential that the bearing surface upon which the spring rests shall be substantially parallel with the axis of the drum and spring, so that the spring maybe firmly seated thereon; but I prefer the groove, it permits the arrangement of the spring substantially flush with the surface of the head of the drum.
To make the friction of the spring adj ustable, the free end is turned outward from the groove, so as to form an arm a, through which an adj HStlHg-SOIGW Z) passes into the frame, and so that that end of the spring may be drawn toward the frame or permitted to recede from the frame to Vary the friction between the spring J and the drum--that is to say, if the free end he forced so far toward the frame as to practically take it out of contact with the groove or shoulder of the drum, then there would be no friction; but if the spring be released so as to bring the spring into contact with the drum, then the friction between the drum and the spring will be according to the circumferential play which is permitted to the spring, and that circumferential play will be limited by the adjusting screw b. Hence the frictional power of the spring may be varied according to circum stances.
I claim In a suspension devicefor lamps and like purposes, the combination of a frame, a spring-actuated drum arranged upon an axis in the frame, chains running from said drum to the thing suspended, the drumconstructed with a concentric internal shoulder or bearing-surface I in a plane substantially parallel with the axis of the drum, with a divided ring-shaped spring J, made from wire, arranged upon the drum against and so as to bear outwardly upon the said shoulder, one end of the said wire spring made fast to the frame, the other end of the wire spring turned outwardly to form an arm a, and a screwb through said arm into the frame, and whereby the spring is made adjustable with relation to the said shoulder,substantially as and for the purpose described.
HENRY D. RICHARDSON.
Witnesses:
F. L. GAYLORD, E. L. BRYANT.
Publications (1)
Publication Number | Publication Date |
---|---|
US464763A true US464763A (en) | 1891-12-08 |
Family
ID=2533632
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US464763D Expired - Lifetime US464763A (en) | Henry d |
Country Status (1)
Country | Link |
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US (1) | US464763A (en) |
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0
- US US464763D patent/US464763A/en not_active Expired - Lifetime
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