US2944748A

US2944748A - Hose braking mechanism

Info

Publication number: US2944748A
Application number: US697699A
Authority: US
Inventors: Harold E Carnagua; Joseph F Tye
Original assignee: Tokheim Corp
Current assignee: Tokheim Corp
Priority date: 1957-11-20
Filing date: 1957-11-20
Publication date: 1960-07-12
Anticipated expiration: 1977-07-12

Description

July 12, 1960 H. E. CARNAGUA ETAL HOSE BRAKING MECHANISM I 4 Sheets-Sheet 1 Filed Nov. 20, 1957 HAROLD E. CARNAGUA JOSEPH F. TYE

INVENTOR.

ATTORNEY July 12, 1 960 H. E. CARNA-GUA QQETAL 2,944,748

HOSE BRAKING MECHANISM 4 Sheets-Sheet 2 Filed NOV. 20, 1957 HARoLoEQ cARNAeuA JOSEPH-F. TYE

. v INVENTOR. BY'ru M V ATTORNEY July 12, 1960 Filed Nov. 20, -1957 v jm H. E. CARNAGLJA ETAL HOSE BRAKING MECHANISM 4 Sheets- Sheet 3 HAROLD E. CAR NAGUA JOSEPH F. TYE

INVENTOR.

ZZWWW ATTORNEY H. E. CARNAGUA ET AL HOSE BRAKING MECHANISM July 12, 1960 4 Sheets-Sheet 4 Filed NOV. 20, 1957 HAROLD E. CARNAGUA JOSEPH F. TYE

INVENTOR.

BYWm W ATTORNEY n ed es Patm fl 2,944,748 HOSE BRAKING MECHANISM Harold E. 'Carnagu'aand' Joseph F. Tye, Fort Wayne, .Ind., assignors' to Tokheim Corporation, Fort Wayne, Ind., 'a corporation of Indiana Filed Nov. 20, 1957, Ser. No. 697,699 19, Claims. (Cl. 24247.5)

invention relates to a hose braking mechanism for a fuel dispenser such as is commonly used in automobile service stations. It relates particularly to a dispenser having a weight retracted hose, part of which is stored within the dispenser and means for preventing retraction of the hose by the weight while the hose is being used, together with means for releasing the retraction preventing means by a deliberate manipulation of the hose when its retraction is desired The details of the invention are fully set forth below in this specification and are illustrated in the drawings which are'attached hereto, madea part hereof and in which: a

,Figure 1 is a general perspective view of the dispenser frame showingthe disposition of the'weight andfhose thereon. 1 r

Fi'gureZ is a side elevation of the hose retracting and brakingmeans. p

FigureS is an enlarged sectional view of the braking mechanismtaken substantially on line 3-3 of Figure 2.

Figure 4 is-an isometric view ofthe cage withtheinertia mechanism omitted.

Figure 5 is atop-plan view of a sprag.-

Figure-6 is an elevation of the sprag of Figure -5 viewed from the bottom thereof.

Figure 7 is a sectional view taken substantially on line 77 of Figure '3 showing especially the 'relat-ion'between the sprags and thesprag retainers. v

Figure 8 is View similar to Figure 3, showing the sprags and release bars 'inbraking and released positions.

Referringto Figure '1, numeral 1 represents the base of the dispenser to which are fixed four cornerposts?! which extend upwardly and support a canopy 5. 'A.,pair of guide angles 7 are mounted-at one end-on a bracket 8 (Fig. 2) which is fixed to the base and at their upper ends on the canopy. The angles areso arranged that one flange 9on each is disposed in the same plane "as and extending toward the other as shown in-Figure 2. These flanges enter a radial groove l-lformed in the weighted hose retracting pulley 13 which is confined thereby for motion in a vertical path .along said flanges.

The pulley has aperipheral groove 15 which iskengaged by the hose 17. As shown in Figure l, the inlet end of the hose is attached .to the meter discharge pipe 19, runs downwardly therefrom, around and upwardly from pulley from the dispenser and as tension is applied to the hose, 7

the weight will rise along the path to which it is confined and yield the hose which is stored in the bight which passes over the pulley. When the brakedescribed'below 2,944,748 Patented July 12, 1960 bracket 8 and support a lock shaft or rod 31, haviug a rectangular cross-section (Fig. 7), on the side'ofsaid pulley opposite the angles 7, parallel thereto, so that the axis of the lock shaft will intersect that of the pulley throughout substantially its entire travel up and down the flanges 9. The shaft has brake reaction meansjor portions169, 171 (Fig; 3) disposed along the path of said pulley in position to be engaged by the brake means.

A bumper or stop retainer 35 (Fig. 2) is mounted on an upper horizontal flange 33 of bracket 8 by suitable screws 37 which also hold in'place'a rubberbumper or stop 39. The bumper is thus disposed in the path of the pulley and serves to limit its'downward travel and thereby the degree of retraction of the hose into the housing.

A bumper rod guide 41 (Fig. '2) having a portion-45 of generally U-shaped vertical cross-section is provided withan upwardly extending flange or arm 43 which is welded to the support 27 so as to depend therefrom to hold the U-shaped portion in a sidewise position (Fig. ,2). A bumper rod or stop'47 extends through .holes 49 in the legs of theU-shaped portion and is surrounded by ahelical compression spring 51 which is confinedjbetween the legs and which acts on awasher 53 which rests ona cross? pin 55 in the rod to hold the stop ina downwardly'extended position so that it will engage and resiliently check the rise, of the pulley .13. a

' Braking structure A cage indicated generally bynumeral 57 comprises top and

bottom orend plates

59, 61 which are similarly formed and which are transversely slotted at63 (-Figs.-3 and 4) adjacent each end to receive the tangs 65 which extend from-both ends of the web of the channel 1116111? bers67, 69 which are disposed in vertical position between the end plates with their channels and flanges extending toward each other. The tangs are bent into contact'with the outer surface of-the associated end-plate and may be welded thereto;

Both

end plates

59, 61 have a centrally disposed open ing 71 which has a square central portion which slidingly receives the square portion of lock shaft'31 and lateral extensions 73 which provide clearance for the resetting means or

pins

75 and 177 which are fixed-in-the'shaft and-extend from a face thereof and which are relatively movableinto and out of the cage as the cage moves up and down on the shaft as will be more fully explained below.

Each

channel

67, 69 has punched out of its web, portion, in spaced relation above the lower end thereof, a pair of

ears

77, 79 which extend outwardly, substantially in the same planes as the correspondingflanges. Ashaft 81 is fixedly mounted in aligned holes 83 in each pair of ears. I

A platform or follower 85 extends into the cage between each pair of ears and has a pair of outwardly 'extending arms 87 which are perforated at 89 to 'receiv the shaft 81. a

A spring 91 has a bail 93 which lies under and in contactwith the platform and has a loop 95'at each side by which-it is mounted on shaft 81 spanning the arms 87. The ends 97 of the spring extend downwardly from the loops and then the terminal portions 99 are bent to extend substantially parallel to shaft 81 and outwardly, below arms 87, so as to extend through holes 101 formed in the ears. l

The spring thus urges the platform shown on the left side of Figure 3 in a counterclockwise direction. The right hand platform is rotated clockwise by its spring. The corners of each

channel

67, 69 are notched at 103 above the position occupied by ears 77, '79. The portion of the notches which lie in the flanges of the channels define a square opening 105 with the interior wall of the web, which is cut away sufficiently to eliminate the radius.

which is inevitably formed at the junction of the web and its flanges. Thus a square pin 107 which has cylindrical end portions 108 and which has the ends of the square portion fitted into the openings 105 and spans the channel, will lie snugly against the interior surface of the web. The pin is of such length that the ends of the square portion are substantially flush with the exterior surfaces of the flanges while the cylindrical end portions 108 are adapted to enter holes 110 in the shell members described below.

Twochannel shaped shell members 109, 111 are disposed so as to span the

channels

67, 69 on each side. The flanges of the members lie outside of the webs of the channels and the webs of the members are drawn into holding contact with the adjacent flanges of the channels by rivets 113.

The member 109 has welded thereto the end flange 115 of a cylindrical journal 117 which has its axis disposed perpendicular to the Web of said member and is adapted to enter a bearing 119 in the weighted pulley 13. The bearing is substantially coaxial with the pulley groove 15.

. It will thus be seen that the weighted pulley and cage are rotatably mounted on each other and that the shell members also prevent the axial movement of the square pins 107.

i. As shown in Figure 3, the brake means comprises a number of sprags 121 which are stacked or mounted flatwise on the platforms 85. As shown in Figure 5, each sprag has a width (top to bottom Fig. which is slightly less than the perpendicular distance betweenthe interior surfaces of the channel flanges.

Since the sprags are identical, only one will be explained in detail. Referring to Figures 5 and 6 it will be seen that the sprag is mitered at 123 and notched at 125 on each side. The upper left hand edge (Fig. 6) is rounded as shown at 12 7. This rounded edge is intersected by a planar surface 129 which forms an angle, herein shown to be about 100 degrees, with the lower surface 131 of the sprag with which it forms a corner.

- The projection 133 which is that portion of the sprag which projects from the right hand side thereof, terminates in a surface 135 which intersects the top surface of the sprag at an angle, also shown to be about 100 degrees, and is thus parallel with surface 129 and produces with the surface 131 a sharp edge or corner 137. As will be seen from Figures 2 and 7, a sprag retainer 139 is fixed to the interior surface of the shell portion 109 to which the journal 117 is fixed and serves to prevent the sprags from falling out of the channels 67', 69 when there is no lock shaft in the cage.

Also as seen in Figure 3, and in projection in Figure 7, an inertia brake releasing mechanism is provided which includes a weight 141 which has a square opening 143 formed axially therein to slidably fit on the lock shaft 31. The weight extends laterally and is guided for up and down reciprocation in the channels 6769. It also has I portions 146 (Fig. 7) which project outwardly over the shells 109, 111 which limit downward movement of the weight. The upward movement will obviously be limited by the endplate 59.

A release bar 147 is set in the weight, on either side of the locking bar and extends parallel thereto toward the respective columns of sprags so as to be in a position to depress the projecting portion 135 of the topmost sprag of each column. The rest of the sprags will be likewise depressed and rotated thereby along with the platform 85 which supports each column, against the action of the respective springs 91. The uppermost sprag in each column is prevented from tilting with respect to the other sprags in its column by the square pin 107 which overlies the end of the sprag adjacent the web of the associated

channel

67 or 69.

The lower end of each release bar is preferably rounded so as to provide an edge 149 for contacting the associated sprag on a line disposed substantially parallel to and closely adjacent to the edge 137 of the sprag.

A cylindrical'recess 151 is provided in eachiwing of the weight. The recesses are coaxial and their axis intersects and is normal to that ofthe lock rod and is perpendicular to the sprag engaging surfaces of the rod.

A hollow detent 153 slidably fits in each recess and is urged outwardly by a spring 155. The outer end of the detent is provided with a small substantially hemispherical boss 157 which is adapted to seat in one or the other of the

indentations

159, 161 in the latch plate 163, one of which is supported upright against the inner surface of the web of each of the

channels

67, 69 and midway between and parallel to the'flanges thereof, by means of tabs 165 which are passed through slots 16'] in the web and deformed slightly so as to hold the plate firmly in place. a

The indentations are so spaced and the detent and indentations are so disposed relative to the sprags and the ends of therelease bars 147 that when the detents engage the uppermost indentations 159, the release bars are entirely clear of the sprags so that they may be rocked into full engagement with the lock rod 31 by their respective springs and

platforms

91, 85. However when the detents occupy the lower indentation 161, the release bars will have depressed the sprags, against the action of the respective springs and platforms so that the sprags are out-of engagement with the lock rod.

It is also preferred to make the release of the detents from the lower indentations-161 slightlymore difiicult than their release from the upper ones. This is accomplished by making the indentations conical in outline and the apex angle, of the cone of the ppe indentation greater than thatof the lower. It has been found that if indentation 159 is made with an apex angle of 150 degrees and 161 with 118 degrees, with both indentations having the same base diameter of about 7 of an inch and the bosses of the'detents have a radius of about .093 inch, the above objective will be attained because a given force acting on the weight, along its axis of motion will produce a greater component of force acting on the detents in a retracting direction which is, of course, along the detent axis when the larger apex angle is used.

Referring to Figures 2 and 3, it will be seen that when the cage occupies the position of Figure 2, which is the lowermost position, the sprags 121 will be disposed adjacent a section of the lock rod 31,. indicated by the bracket B (Fig. 3), which has the brake reaction means 169, 171 of thelock rod facing the sprags cut away or relieved to a depth which will prevent eflfective braking engagement between the sprags and the lock rod. Terminal portions of the reaction means 169, 171 are not defined by sharp offsets but are merged with the relieved section'by inclined surfaces such as 173, 175 respectively.

In other words, the relief is suflicient to prevent the sprags from simultaneously engaging the reaction means of the lock rod and the corresponding channel web in this section, so that the cage will permit the pulley to reach its lowermost position in contact with the bumper 37 even thoughthe weight 141 and release bars 147 have been lifted by the second or lower resetting pin 177, which is mounted on the lock bar, to free the sprags and the sprags are in their braking position.

Operation Assuming that the dispenser is in the normal inoperative posltion which the weighted pulley. 1'3 occupies its swarms lowermost position "and rests on 'bunipen or stop 39' and the nozzle 25 rests on a nozzle support 26',i'twill befseen that'th'e hose 17' will occupy the position shown generally in F-ignre 1.

When it is desired to dispense liquid, thenozzle will be removed from its support. This will'make available for use the length of'the hose which is supported in the bight outside of the dispenser housing. Ifthis length of hose is not sufficient to enable'the nozzle to be properly inserted in the fill pipe of the automobile being serviced, theoperator may utilize so much offthehose stored in the bight which supports the pulley 13 ashe re uires by simply pulling the hose from the dispenser hous'i'ng.

Referrin'g to Figure 3, it will'be seenfthatwhen the cage 57 occupies its lowermost position which corresponds to the lowermost position'of the pulley 13 (Fig. '2), the weight 141 and releasebars 147 comprising the inertia mechanism occupy their uppermost initial or inenective position relative to the cage and the-brake means as shown in Figure 3, The edges137'of sprags 121 are "thus urged upward by their associated springs and

platforms

91, 85 to positions in which they would normally engage the opposite surfaces of the reaction means of the lock rod 3 1. The sprags not long 'enou'ghhowever to simultaneously engage the inner web surface of'the associated channeland the corresponding surfaces of the "red the section B where the braking portions have been relieved. Neither arethe ends of the sprags able to engage the web inner surfaceof a clianhel' and the-corresponding reaction means of the locksh'aft when the weight 141 is inits lower or effective position. I Y Y 'A's the operator pulIsho'se-from the dispenser housing, thelpulley 13 is raised and the cage 57 is likewiseraised 'wit'hrespect to lock rod 31 by reason of pivotal connection 117, 119 with the pulley. Also the sprags pass 'tliesct-ion B of therodand their edge surfaces 135 will he 'substantially parall;el to and will'bearagainstand "drag on the opposingreactionsur'faces of the lock rod.

They will' lbe depressed against theact'ionfof springs 91 so that they will continually and reaction means of the'ro d. H

Thus, as "soon as the pull on the'hose is "relaxed, the pulley 13ivvill tend'to move downwardly and will urge {the cage '57 in a similar direction but since the ends of'the sprags are'in engagementgwith the reaction means- -of-the lock rod they will not move downwardly with respect thereto'with the result that the ends of the sprags which are adjacent the webs of

channels

67, 69 will. be moved downwardly by the *square'pins 107. The sprags thus tend to move or tilt to 'mo re nearlyhorizont'al posifrictionally engage the tions to "engage the cornersor edges 137 the reaction means. since' the'length ofthespragsds greater than the "perpendicular distance from the line'o f contact between the one side 129 of the sprag withthe {webof the channel and the line ofcontact ofedg'e' 137 and the corresponding reaction "surface, the sprag will be jammed 'het'w'een the 'rod and channel and will lock or brake' the cage and pulley 13 against-further downward movemerit. The hose withdrawn from the dispenser will: thus be held agairistretration and 'the operator is relieved crane burden'of'maintaining tension on the hose to hold ing after it has been partially withdrawn, the operator tug sharply on the hose. This of course pulls s'om'e of the hose "outof the housing as described in the precedgingparagraph-and loosens the 'sprags from the reaction thrust on the dctents 153' to displace them tron-ithein' dentations 159 and when the detent's become aligned with the indentations 161, they will 'be entered therein by springs 155; 'In this position the release bars 147 have in eifect dcpressedthe ends of thespr'ags sufficiently-to hold them .outYof engagement with the reactionsurfaces of the lock rod. The pulley 13 will therefore be free to drop until it contacts the bumper so as to fully ret fact the hose. 'Such descent will, of course,b'e controlled by n the operator who maintains a limitedtension on the'h'o'se.

' In case the detents 153 should pass the indentation 161 the inertia mechanism will "shortly be stopped by contact of the bottom end of weight 141 with 'the'upperedges of shells 109, 111 in which position the 'sprags are still released. I 7 v As the pulley 13 'moves in'the hose retrieving direction and shortly before the pulley reaches the bumper and further, whilethe sprag's are in 'the region of the relieved section B of the lock rod, the resetting pin 177 on the rod engages the bottom end of weight '14 1 and 'checks'its descent while the cage continues on. Thus' theinertia mechanism is restored to its initial or ineffective position; The described cage motion moves the'ends of the sp'ra'gs away from the ends of the release rods 147 and permits the springs 91 to rotate the sprags to 'a position in which 'they w-ill engage the-'reaction means of rod 31 whenthe hose'is subsequently pulled but. ssen engagement does not occur withinthe section'B {Fig.j?!) dueto the relief provided on the rod, Thus, Teven after the weight isreset'to its initial positiom the oageand pulley 1'3are' free to continue on tdthe'buniperor-lo'vver .stopengagin'g position. f 1 There is another possible condition which'inust he rod 47 appreciably when the hose'is pulled out in anormal manner.

i The sprags function in 'the mannerdescribed-above to hold thepulley 13 int'hisposition. When it is desired "to fretra'ctthe hose however, an extremely severe 'tug on the hose would be requiredto accelerate the cage and pulley 13 sufficiently to cause the inertia mechanism to displace the detentslSSand-move the sprags out-er engagement in theface of the opposition presented by the stop'47and thespring 51. I

Accordingly, a resetting pin 75 is fixed inrod 31 so as to beengaged by the upper'end of Weight 141'when th'e hose has been pulled out far'enoughtoraisethe-bumper rod 47 a predetermined distance. Thereafter, additional upward movement of the pulley 13 and cage 57 which further moves rod 47, will mowe the cagerelative -totthe Weight 141 and the release bars 147 which are-held sta- I tionary by pin 75. This motion of the cage will disengagethe detents 1 53 from indentations 159 and position the indentations 161 in alignment with the detents. "It will, also shift the outer ends of the sprags relative to the inner ends, which are held stationary by therelease irods 147, so that the sprags will be released from the reaction means of the lock rod.

When this has been-accomplished and the "detents "153 are seated in-indentations 161, relaxation'ofwthe pull 11 .the' hose 'willt'peririit the pulley .13 to neo ene-rema ns 7 hose until the pulley strikes the lower bumper in the same manner as described above.

It is of course impossible, by any manipulation of the hose, to reengage the sprags with the lock rod during the hose retracting operation since the weight 141 and release bars 147 cannot be moved to their releasing positions except by contact with the lower resetting pin 177 as described above.

It is obvious that various changes may be made in the term, structure and arrangement of parts of the specific embodiments of the invention disclosed herein for purposes of illustration, without departing from the spirit of the invention. Accordingly, applicants do not desire to be limited to such specific embodiments but desire protection'cfalling rfairly within the scope of the appended claims.

We claim:

1. In a hose retracting mechanism comprising an integral hose retracting Weight and hose pulley engaged in a bight of hose, means for fixing one end of the hose, means for guiding said weight and pulley for movement in a path, in directions to retract and yield the hose, the improvement which comprises brake reaction means disposed substantially along the path of said weight and pulley, releasable, unidirectional acting brake means mounted for movement with said weight and pulley, along said reaction means, yieldable means for urging said brake means into position for engagement with said reaction means, said brake and reaction means cooperating, upon movement of said weight and pulley in its hose retracting direction to hold said weight and pulley against further movement in said direction, inertia means mounted on said pulley and movable :from an initial position to an effective position in response to a predetermined acceleration of said pulley in its hose'yielding direction, for releasing said brake means and for holding said brake means released.

2. In a hose retracting mechanism comprising a weighted hose pulley engaged in a bight of hose, means tor fixing one end of the hose, means for guiding said pulley for movement in a path, in directions to retract and yield the other end of the hose, the improvement which comprises a fixed element having brake reaction means disposed substantially along the path of said pulley, releasable, unidirectional brake means mounted .cfor movement with said pulley, along said reaction means, yieldable means for urging said brake means into position for engagement with said reaction means, said brake and reaction means cooperating, upon movement of said pulley in its hose retracting direction to hold said pulley against further movement in said direction, inertia means mounted on said pulley and movable from an initial position to an effective position in response to a predetermined acceleration of said pulley in its hose yielding direction, for releasing said brake means and for holding said brake means released.

3. In a hose retracting mechanism comprising a weighted hose pulley engaged in a bight of hose, means 'for fixing one end of the hose, means (for guiding said pulley for movement in a path, in directions to retract and yield the other end of the hose, the improvement which comprises a fixed element having brake reaction means disposed substantially along the path of said pulley, releasable, unidirectional brake means mounted for movement with said pulley, along said reaction means, yieldable means for urging said brake means into position for engagement with said reaction means, said brake .and reaction means cooperating, upon movement of said pulley'in its hose retraction direction, to hold said ,pulley against further movement in said direction, inertia means movable from an initial position to an effective position in response to a predetermined acceleraiton of said pulley in its hose yielding direction, for releasing s aid brake means and for holding said brake means re- 8 leased, and'means tor holding said inertia means in said efiective position. I

4. In a hose retracting mechanism comprising a weighted hose pulley engaged in a bight of hose, means for fixing one end of the hose, means for guiding said pulley for movement in a path, in directions to retract and yield the other end of the hose, stop means disposed in said path for limiting the movement of said pulley in said hose retracting direction, the improvement which comprises a fixed element having brake reaction means disposed substantially along the path of. said pulley, re leasable, unidirectional brake means mounted for movementwith said pulley, along said reaction means, yieldable means for urging said brake means into position for engagement with said reaction means, said brake and reaction means cooperating, upon movement of said pulley in its hose retracting direction, to hold said pulley against further movement in said direction, inertia means movable from an initial position to an effective position in response to a predetermined acceleration of said'pulley in its hose yielding direction, for releasing said brake means, releasable means for thereafter holding said inertia means in said elfective position and fixed means disposed 'for contact by said inertia means, when said pulley closely approaches its limit of movement, for restoring said inertia means to its initial position, said yieldable means serving thereupon to move said brake means into reaction means engaging position.

5. In a hose retracting mechanism comprising a Weighted hose pulley engaged in a bight of hose, means for fixing one end of the hose, means for guiding said pulley for movement in a path, in directions to retract and yield the other end of the hose, stop means disposed in said path for limiting the movement of said pulley in said hose retracting direction, the improvement which comprises a fixed element having brake reaction means disposed substantially along the'path of said pulley, re-

leasable, unidirectional brake means mounted for movement with said pulley, along said reaction means, yieldable means for urging said brake means into position for engagement with said reaction means, said brake and reaction means cooperating, upon movement of said pulley in its' hose retracting direction, to hold said pulley against further movement in said direction, inertia-means movable from an initial position to an effective position in response to a predetermined acceleration of said pulley in its hose yielding direction, for releasing said brake means, releasable means for thereafter holding said inertia means in said effective position, fixed means disposed for contact by said inertia means, when said pulley nears its limit of movement for restoring said inertia means to its initial position, said yieldable means serving thereupon to move said brake means to engaging position, said reaction means being cut away substantially adjacent that portion of said path occupied by said brake means when said fixed means and said inertia means are in engagement so as to prevent effective engagement of said brake and reaction means and permit complete retracting movement of said pulley. 1

6. In a hose retracting mechanism comprising a weighted hose pulley engaged in a bight of hose, means for fixing one end of the hose, means for guiding said pulley for movement in a path in directions to retract and yield the other end of the hose, stop means disposed in said path for limiting the movement of said pulley in said hose yielding directions, the improvement which comprises a fixed element having brake reaction means disposed substantially along the path of said pulley, releasable, unidirectional brake means mounted for movement with said pulley along said reaction means, yieldable means for urging said brake means into position for engagement with said reaction means, said brake and against further movement in said direction, inertia means movable from an 'imtiaLp sitiento aneirective es'itien in response to'a predetermined acceleration of said pulley in its hose yielding direction, for releasing said brake means, releasable means for thereafter holding said inertia means in said elfective position, means for yieldably mounting said stop means, fixed means disposed fo'r contact 'by said inertia means, upon yielding of said stop 'forfixing one end of the hose, means for guiding 'said pulley for'movement in a path in directions to retract and yield the other end of the hose, first and second stop means disposed in said pathfor limiting the movement of said pulley in said hose retracting and hose yielding directions,the improvement which comprises a fixed-element having brake reaction means disposed substantially along the path of said pulley, releasable, unidirectional brake means mounted for movement with said pulley, along said reaction means, yieldable means for urging said brake means into position for engagement with said reaction means, said brake and reaction means cooperating, upon movement of said pulley in its hose retracting direction to hold said pulley against further movement in said direction, inertia means movable from an initial position to an effective position in response to a predetermined acceleration of said pulley in its hose yielding direction, for releasing said brake means, releasable means for thereafter holding said inertia means in said eifective position, fixed means disposed for contact by said inertia means, when said pulley nears the limit of its retracting movement, for restoring said inertia means to its initial position, said yieldable means serving thereupon to move said brake means to engaging position, said reaction means being cut away substantially adjacent that portion of said path occupied by said brake means when said fixed means and said inertia means are in engagement, so as to prevent effective engagement of said brake and reaction means and to permit complete retracting movement of said pulley, means for yieldably mounting said second stop means, fixed means disposed for contact 'bfalie nran's; in said first position, serving to prevent movement-of saidpulle -onlyin the "hose retracting direction, yieldable means for urging said brake meanstoward its first position and inertia means mounted on said pulley 'for movement between ineffective and brake releasing positions, yieldable means for detaining said 'inertia means in saidine'ffective position, said yieldable means being-constructed so as to yield in response to a predetermined accelerationof said pulley in the hose yielding direction so asto release said inertia means for movement to its brake releasing position.

10. In a hose storing apparatus, comprising a weighted pulley disposed in a bight of'hose which has a fixed end by said inertia means, upon yielding of said second step a predetermined path, the improvement which comprises a fixed element having brake reaction means disposed along said path, unidirectional brake means mounted for movement with said pulley along said reaction means and movable between first and second positions, in and out of engagement with said reaction means, said brake means, in said first position, serving to prevent movement of said pulley only in the ho se retracting direction, yieldable means for urging said brake means toward its first position and inertia means mounted on said pulley and -coacting with said brake means to move same to and hold same in said second position, in response to a predetermined acceleration of said pulley in the hose yielding direction.

9. In a hose storing apparatus comprising a weighted pulley disposed in a bight of hose which has a fixed end and a free end, means mounting said pulley for movement in hose yielding and hose retracting directions in a predetermined path, the improvement which comprises a fixed element having brake reaction means disposed along said path, unidirectional brake means mounted for movement with said pulley along said reaction means and movable between first and second positions, in and out of braking engagement with said reaction means, said and a free end, means mounting said pulley for movement-in'hose yielding and hose. retracting directions in -a predeterminedpath, the improvement which comprises a fixed lock shaft having brake reaction means disposed along 'saidpath, 'a'cage mounted for movement with said pulley and: for sliding along said shaft, unidirectional brake means mounted on said cage for movement between'first and second positions, in and out of engagement with saidreaction means, said brake means in said first position serving to prevent movement of said pulley only in the hose retracting direction, yieldable means for urging said brake means toward its first position and inertia means mounted on said cage for movement between ineffective and brake releasing positions and coacting with said brake means to move same to said second position in response to a predeterminedacceleration of said pulley in the hose yielding direction.

11. The structure defined by claim 10 wherein said brake means comprises a number of sprags disposed between said cage and said reaction means and said yieldable means comprises sprag supporting means tiltably mounted on said cage and which tilts said sprags to said first position in which they are in braking engagement with both said cage and said reaction means.

12. The structure defined by claim 10 wherein said inertia means comprises a Weight guided for reciprocation in said cage and means on said weight disposed to engage and move said brake means.

13. The structure defined by claim 11 wherein said inertia means comprises a weight guided for reciprocation in said cage and release bars on said weight disposed to engage at least one of said sprags in a region adjacent to the reaction means so as to tilt and move said sprags and sprag supporting means to said second position.

14. In a hose storing apparatus comprising a weighted pulley disposed in a bight of hose which has a fixed end and a free end, means mounting said pulley for movement in hose yielding and hose retracting directions in a predetermined path, the improvement which comprises a fixed lock shaft having brake reaction means disposed along said path, a cage mounted for movement with said pulley and for sliding along said shaft, unidirectional brake means comprising a number of sprags mounted on said cage for movement between a first position in which they are in braking engagement with both said cage and said reaction means and a second position in which they are out of braking engagement, said sprags, in said first position, being so disposed as to prevent movement of said pulley only in the hose retracting direction, yieldable means for urging said sprags toward said first position and inertia means mounted on said cage for movement between ineffective and brake releasing positions, said inertia means being moved to its brake releasing position in response to a predetermined acceleration of said pulley in the hose yielding direction and including means disposed to engage said sprags when said inertia means moves to said brake releasing position and to move them to said second position.

15. The structure defined by claim 14 which includes means for stopping said pulley in a fully retracted position, a fixed element disposed in the path of said inertia means for contact therewith as said pulley nears its retracted position, said element serving torestore said inertia means to said ineffective postion as said pulley moves to said retracted position.

16. The structure defined by claim 15 in which said reaction means is cut away adjacent the position occupied by said sprags when said fixed element and said inertia means are in contact to prevent braking engagement of said sprags therewith when said inertia means is restored, to permit the movement of said pulley to said fully retracted position.

17. The structure defined by claim 14 which includes additional step means, means for yieldably mounting said additional stop means for checking said pulley after predetermined movement thereof in said yielding direction and for stopping said pulley after further predetermined movement thereof in the same direction, a fixed element disposed in the path of said inertia means to cause said means to assume its brake releasing position, to 'free said pulley for movement in said retracting direction during said further predetermined movement.

18. The structure defined by claim 16 which includes additional stop means, means for yieldably mounting said additional stop means for checking said pulley after predetermined movement thereof in said yielding direction and for stopping said pulley after an additional predetermined movement thereof in the same direction, a secon'djfixed element disposed in the path of said inertia means to contact and cause said inertia means to assume said brake releasing position, to free said pulley for movement in said retracting position during said further predetermined movement.

19. The structure defined by claim 14 which includes detent means for releasably detaining said inertia means in said inefiective' position, said detent means being constructed and arranged to release said inertia means in-response to said predetermined acceleration of said pulley.

Kifie u Feb. 9, 1932 2,010,006 Bosch Aug. 6, 1935 2,466,996 ,Monnot Apr. 12, 1949